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Reviews are listed after each mod info.

Transport mods:
Northstar M192 Transport Turbomod
Sony DVP-S7700 Transport TurboMod
Sony DVP-S7000 Transport Mods
Denon 5900 Transport Mods
Sony DVP-S9000es Transport Mods
Pioneer DV-47A Transport Mods
Pioneer Elite PD-65 Transport Mods
CDP mods:
Shanling SCDT-200 CDP TurboMod
Electrocompaniet EMC1UP CDP Mods
Sony DVP-CX777es Transport/CDP Mods
DAC mods:
Benchmark DAC-1/DAC-1 USB Turbomod
Benchmark I2S Interface Mod
Northstar M192 DAC Turbomod
Perpetual Technologies P-3A DAC TurboMod
Perpetual Technologies P-1A upsampler Turbomod
Electrocompaniet ECD-1 Turbomod
Audionote DAC4 Mods
ack dAck! Mods
Birdland Odeon-Lite DAC Mods
Bel Canto DAC2 Mods
Meridian 566 Mods
MSB Gold III/Power Supply Turbomod
EAD DSP-7000 mods
Preamp mods:
Mark Levinson #38/380 Mods
Amplifier mods:
Parasound JC-1 Monoblock Turbomod
Adcom GFA-585 Amplifier Turbomod(discontinued)
Parasound HCA-3500 Amplifier Turbomod
Carver-Pro ZR1600/ZR1000 Turbomod
Miscellaneous mods:
DEQX Crossover Mods
Monarchy DIP Mods/add USB
Meridian 566 Mods/add USB interface
Hammerfall HDSP 9632 PCI Card Mods
E-MU 1212 PCI Card Mods

Empirical Liability and Policies:


  Top Mods Ranking:

Transports:

  1. Northstar M192
  2. Sony DVP-S7700 or 7000 Turbomod w/Superclock
  3. Pioneer DV-47A with Superclock
  4. Pioneer PD-09 with Trichord digital output module/clock and
    disconnected power modules
  5. Denon 5900 with Superclock and Jensen Cap
  6. Philips 963SA with Superclock
  7. Pioneer PD-65 with Superclock

DAC's:

  1. Spoiler USB TubeDAC
  2. Benchmark DAC-1 Turbomod and Op-amp replacement, I2S interface
  1. Northstar M192 DAC with Turbomod
  2. Perpetual Technologies P-3A Turbomod with SuperTurboclock3 or
    modded Superclock3
  3. MSB Gold III/Power Supply Turbomod with 24/192 upsampler
  4. dAck! with Turbomod and Teflon V-cap upgrade
  5. Meridian 566 - (non-upsampler)
  6. Electrocompaniet ECD-1 Turbomod with SuperTurboclock3 or modded
    Superclock3
  7. Audionote DAC4 tube-DAC mods - (non-upsampler)

We will not mod Scott Nixon TubeDAC, so don't ask.

Amplifiers:

  1. Parasound Halo JC-1 monoblocks Turbomod
  2. Parasound HCA-3500 Turbomod
  3. Adcom GFA-585 Turbomod
  4. Carver PRO ZR1600 Turbomod

  What is unique about Empirical Mods?

Empirical mods combine an engineering knowledge of power delivery,
signal transmission, circuit analysis and cable design to deliver
significant audible improvements to you at an excellent value. We
are able to leverage almost 30 years design experience with signal
transmission, interface design and digital electronics.

Our mods are different because they are wholistic in nature. We evaluate
all of the compromises that were made in the original design and redesign
these. Typical consumer products are designed to a "price-point", which
results in compromises and trade-offs that ultimately impact the quality
of the sound. Consumer gear is also designed for high-volume manufacture
which means circuit board wiring and minimizing hand-soldering and
cabling. Circuit-boards are made of inferior dielectrics and the current
paths are less than optimum due to ground-plane construction and routing
constraints. In most cases, external cabling will improve these. Because
hand-solding is eliminated in consumer products, high-quality "through-
hole" components are sometimes avoided. All of these compromises can
be reversed with appropriate mods. In addition, we have found that even
the best analog circuit designers tend not to be proficient in the more
esoteric areas of design, namely power delivery, grounding, return paths,
wiring, shielding and transmission-line effects. It is these areas that make
significant sonic improvements and these areas where Empirical Audio has
extensive training and experience.

Our mods apply changes in these areas:

  1. Upgraded power delivery parts
  2. Improved power delivery topology (where the parts are located
    and how the wiring is connected/routed)
  3. Improved/redirected signal paths
  4. Cabling harnesses that leverage Empirical cable technology
  5. Improved active parts, such as op-amps and analog selectors etc.
  6. Improved circuit topologies to increase bandwidth and reduce noise
  7. Undoing fundamental design errors
  8. Introducing high-performance modules to replace inferior parts
  9. Matching digital transmission-lines for speed and signal integrity

We are able to apply these strategic changes to virtually any equipment,
including amps, preamps, CDP's, DAC's and even speakers. The effect of
these changes is to increase dynamics, detail, HF extension, focus and
bass tightness while actually reducing sibilance. If your equipment
is not on our list of mods, we can still mod it and achieve these results.
You must hear the effect of these wholistic changes to believe it.

What is a Turbomod?

Turbomod is a designation that we give to the best components that we
modify. These we consider reference components. We would have no
hesitance to demonstrate these at CES or use in our reference system.


  Empirical Audio Liability and Policies

Liability:

1) Sound Quality

We at Empirical Audio will do our best to improve any component that
customers entrust us with. However sound quality is subjective. There
is no guarantee that every customer will like the sound that we consider
reference quality. There are also system synergy considerations. When
we mod a component, the high-frequency extension and dynamics are
usually improved. This can actually aggravate other system components
and even cables to produce more sibilance than was present before the
mods. This may not be the fault of the source component that we modded.
It may be completely sibilance-free. The source of the sibilance is now
elsewhere in the customers system and was previously masked because
the high-frequency extension/dynamics of the system prior to modding
was limited. When these limits are removed, sibilance occasionally results.
Likewise, when we mod a Transport, we generally speed-up the edge-rates
and match the output impedance to precisely 75 ohms. If the customer
is not using a 75 ohm digital cable or their DAC is not matched well to 75
ohms, reflections will result, with resulting jitter and fuzzy high-frequencies.
These are the risks that the customer takes when they decide to have
their components modded by Empirical Audio. These mods usually
void the factory warranty as well. We will take steps to try to make every
customer happy, but this does not include refunds, removing all of the
mods, buying the component or paying a third party to remove the mods.
In order to achieve the best possible results, it is sometimes necessary for
the customer to send their Transport, cable and DAC so these can be "tuned"
as a system for optimum results.

2) Shipping

Empirical Audio will automatically try to repair any item that incurs
shipping damage when received, unless we consider it beyond simple
repair. All components will be tested upon receiving and unpacking them
prior to performing mods. If this initial test indicates damage, but there
is none visible, Empirical will try to repair the unit by re-seating cables
inside or mechanical repairs such as teeth skipped on gears etc.. In the
event that there is obvious damage by the carrier, we will transfer the
component to the carrier for claims disposition at the customers request.
It is the responsibility of the customer to file the insurance claim with the
carrier.

For items shipped from Empirical Audio to the customer, the customer
is responsible for transfer of the package to the carrier and making the
insurance claim. For a claim to be made, the item with box and packing
must immediately be given back to the carrier.

Empirical will generally pack the component in the original packing that
was received with it. If we feel that this is insufficient, we will notify the
customer, who will have the option, at additional expense, of improved
packing to help insure it arrives without damage. The customer is also
responsible for installing any retention mechanisms, including screws,
bolts, tape etc.. that the manufacturer specifies for the component for
safe shipment. Empirical will install these in the same way that they were
installed when the component was received to help insure a damage-free
return shipment. Empirical Audio will not be responsible for damage that
occurs due to negligence, such as omission of necessary restraining
mechanisms by the customer.

Policies:

1) Payment

Payment for all products is in advance of delivery. All monies due must
be paid in order for the product/modified component to be shipped. Payment
can be by personal check, money-order or by PayPal, which adds a fee.

International orders must be paid by PayPal or international money order in US
dollars.

The warrantly will not be in effect until the balance is paid in full. If the
balance is not paid within 30 days, the warranty will be voided.

2) Order of work

Jobs will be executed in the order in which the units were received. If
payment is included with the unit, it will have priority over a unit that is
waiting payment.

  Demo Units

Empirical offers some demos on DAC's, cables and Computer Converters if they
are not tied-up at reviewers. We require a refundable deposit of 50% of retail
and we typically do not sell the demos, although when they get close to end-
of-life as a product, we do sell them, sometimes at steep discounts.

Here are the terms of the audition agreement:

  1. The duration of the audition will be 21 days of actual audition time (not including shipping)
  2. If the audition exceeds this period, each additional day will be charged at $20/day from the
    deposit
  3. If any of the equipment is damaged functionally (for instance the drawer does not work),
    repairs or replacement will be deducted from the deposit
  4. If the equipment is cosmetically damaged, such as scratches on the transport window,
    repairs or replacement will be deducted from the deposit (there are minor scratches on the
    top of the transport already)
  5. The user will be expected to protect the equipment from voltage surges, such as during a
    lightning storm unplugging the equipment.
  6. The user will be expected to connect and disconnect all of the equipment to his system
    with the power off on all equipment.
  7. The user will take reasonable precautions to minimize electrostatic discharge when
    connecting or disconnecting the equipment - touch something grounded first.
  8. The user will retain the packaging and reuse it for return shipping in the same way
    that it was originally packed.
  9. The Transport drawer will be opened and closed only using the front-panel button.
    Avoid pushing on the drawer.
  10. The deposit will be returned within 5 days only after ALL equipment and accessories are
    returned.

Please contact us by email for availability.


Northstar M192 Transport
The modded Northstar Transport is our recommendation for the best
transport you can buy. It uses the Philips Pro 2 drive and outputs I2S
data upsampled to 24/192. The upsampling chip is the best currently
available. Much better than previous chips.

Our mods improve the I2S interface and the internal upsampling clock.
This is such a good transport that we do not offer new ones without the
Superclock mod. It is for the audiophile that wants an analog-sound from
digital.

The output is 24/192 from the I2S output and 16/44.1 from the S/PDIF
outputs. We highly recommend using the I2S interface as this is the best
sound quality.

This is the only transport that competes with the sound quality of our
computer audio converters. Very detailed, black background with superb
dynamics and vocal smoothness. A revelation to hear. Fantastic driving
either the Northstar M192 DAC or the Benchmark DAC-1 with I2S interface.

  Pricing:

TurboMod for your Northstar Transport - $300

Superclock4 installed in your Northstar Transport - $600

New Transport complete with Turbomods and Superclock4 - $3000

Please send us an email and we will arrange for payment and shipment.

  Reviews:

Sony DVP-S9000es Transport Mods
The 9000es is transformer-coupled and has very good output electronics.
However, the signals are very slow and the crosstalk in the circuitry keeps
it from being a world-class Transport. Our mods increase the S/PDIF speed
and reduce jitter, giving it the cleanest output of any transport we have
seen. After these mods, the Sony is truly spectacular.

The Sony Transport mods consist of:

  1. Power supply component upgrades
  2. Rewiring of the digital output circuitry
  3. Elimination of parts that slow the output signal and redesign of the
    output circuit
  4. Parts upgrades, including the Pulse Transformer
  5. Tuning of the output to precisely 75 ohms
  6. Stillpoints EMI material in the right locations

The Transport mod increases the edge-rate on the digital and optical
outputs and eliminates crosstalk and other noise, thereby significantly
reducing the jitter in the S/PDIF signal. The mod does not improve the
analog outputs and assumes that the player will be used as a high-
quality transport. The audible effect is that the image focus will improve
and high-frequency content will be cleaner. For instance, bongos will
sound more like live bongos and be distinct from other drums when used
in conjunction with a high-quality DAC, such as the PT P-3A. The bass
impact is improved significantly as well.

  Pricing:

9000es Mod (Stock Transport) - $600

If the unit already has Modwright power-supply upgrades, then the cost
is $300

Please send us an email and we will arrange for payment and shipment.

  Reviews:

Sony DVP-S7700 Transport Mods
An inexpensive way to obtain world-class transport performance.
This is the only transport available that has both DVD and CD
lasers in it. It has the precision of a DVD drive combined with
a CD laser, which is superior for reading CD's. It also has a non-
transformer-coupled S/PDIF output, which further reduces jitter.
The Stereophile review said that the stock transport was nearly as
good as the Mark Levinson #37. After these mods, the Sony is
truly spectacular. It is still our reference transport.

The Sony Transport mods consist of two basic Mods with Turbomod
extensions:

  1. Power supply component upgrades - similar to ModWright level2
  2. Rewiring of the digital output circuitry as well as parts
    rearrangement and addition of Stillpoints EMI material
    in the right locations

The Mod I power supply mod reduces power supply induced noise and
the jitter that results from this. Will improve the analog outs.

The Mod II digital mod increases the edge-rate on the digital and optical
outputs and eliminates crosstalk and other noise, thereby significantly
reducing the jitter in the SP/DIF signal. Mod II does not improve the
analog outputs and assumes that the player will be used as a high-
quality transport. The audible effect is that the image focus will improve
and high-frequency content will be cleaner. For instance, bongos will
sound more like live bongos and be distinct from other drums when used
in conjunction with a high-quality DAC, such as the MSB or PT P-3A.

The Turbomod upgrade adds power deliver wiring and decoupling caps
to further improve dynamics by reducing jitter and increasing edge-rates.
For previous customers that already have the basic mod, improvements
to the S/PDIF output driver are also included. The Turbomod takes the
transport to a new level, adding significant depth, clarity and dynamics.

  Mod Details:

Basic Mods - Black Gate capacitors are swapped-in as well as high-frequency
decoupling caps. Harris FRED's replace the bridge rectifier. Equivalent
to Modwright mods. Digital output circuitry is rewired, components are added
and rearranged. More Black Gates added. Stillpoints EMI treatment.

Turbomod - Power wiring is added. More high-frequency decoupling.
High-speed improvements to S/PDIF output stage.

Jenson 4-pole Capacitor option improves dynamics.

Modded SuperTurboClock3 - The ultimate in clarity and image focus

  Pricing:

Basic Mods - $500

Turbomod - Adds $200 - upgradable from Mod II

Jenson 4-pole cap instead of Black Gate - add $130

SuperTurboClock3 modification - $550

Please send us an email and we will arrange for payment and shipment.

  Reviews:

http://www.audiocircle.com/circles/viewtopic.php?t=1998

"I received my S7700 transport earlier today from Steve. This had a
Modwright level 2 mod (with Bybee) done to it before Steve did his
mods. I normally don't like to say absolutes without A/B'ing, and I
could not A/B in this instance. I could not listen to the transport for
2 weeks prior to today so take my comments for what they are worth.
The rest of the system is: DAC is a Bolder Mensa, pre is a Bent TX102,
amps are Symphonic Line Kraft mono 400's, speakers are nOrh marble
9.0's and all cabling is Bolder Nitro.

The music sounded more relaxed and closer to analog, the soundstage
seemed wider and deeper, and there was more air around instruments.
The backround seemed blacker too. I really can't think of an area that
wasn't improved over my memory of a few weeks ago.

The music I used was Jennifer Warnes - The Hunter, cuts 1,2, 8. and 9.
On track 9, The Hunter, I noticed violins that I hadn't noticed before.
Then I played some Herbie Hancock - Headhunter. About 2/3 of the way
through Chameleon I noticed some sharp bass guitar licks that I hadn't
noticed before. With Eric Clapton - Crossroads third CD, it was just
more realistic in the presentation, wider deeper, with more of a "you
are there" feeling.

I cannot A/B this modded unit with what it was before, but the results
are not subtle. To me there was a significant upgrade. I have spent a lot
more on audio stuff and gotten a lot less in return than this upgrade.

Highly recomended IMO."

Robert C.
2003 - (Mod II only)

http://www.audiocircle.com/circles/viewtopic.php?t=3602

I have had my Empirical Audio modified DVP-S7700 for a few weeks
now, and I just had to say a few words about it. Nothing too detailed
as I haven't taken notes and analyzed the hell out of it. First, I just do
not understand how the transport can make much of a difference in the
sound. I always thought the biggest bang-for-the-buck would be the
DAC. I mean the transport just sends the signal of 1's and O's to the
DAC where it gets re-clocked and sorted out into an analog signal that
my pre-amp can understand.

I could not have been more mistaken. The difference was jaw-dropping.
I used to listen 80% to vinyl and 20% to CD's. For the past few weeks
it has gone the opposite. I have been spinning a lot of CD's lately, and
I just keep pulling them out.

On orchestral pieces in particular, strings have a naturalness to them
that I have never heard in my system. Separation and air are there in
spades as well as a smoothness and refinement that I have not had
before. And it really doesn't matter what type of music I am listening
to, they all seem to benefit. Classical, jazz, rock, thrash, speed metal,
punk, ska, easy listening, east african wind chime ensembles, grunge,
disco, hip-hop, rock 'n roll, gospel, R&B, opera and my daughters
Disney CD's all sound better.

So in case I wasn't clear, I don't understand why it works, all I know
is that this is one of those jaw dropping, I can't believe my system
had this potential, WOW kind of moments.

If you are looking for a great transport pick up a DVP-S7700 for under
$300 and get the mods for $500. You will not regret it.

Oh, I almost forgot to mention that Steve from Empirical is the real
deal. He knows what he's doing and he is very fast at getting the mods
done and back out the door to you.

Steve J.
July 2003 (MOD II only)

http://www.audiocircle.com/circles/viewtopic.php?t=11868

My first impression was, I can't believe that a transport can make this
much difference in the sound coming out of my system. I listened to
both of my demo/audition discs almost all the way through. Smooth,
listenable, very very real sounding, emotion conveying, bass with
authority, detail, DYNAMICS!! Much much different than before.
Whenever I read about the 7700 being harsh on the high end I really
didn't understand how the writers could have been listening to the same
piece as I owned. Now I know how they said that, because compared
to the Turbomodded 7700 the "regular" one is definately sibilent up
there, however, now any harshness is simply gone. If I could use one
word to describe everything it would be smooth. On some tracks where
previously there was background noise or hiss - now, it's not there
anymore. Background is "blacker". Jesse Cook's Bahgdad is the best
I've ever heard it from my system. His guitar appears out of nowhere,
the image is spot on, instruments are now more easily identified and
not all lumped into the middle of the soundstage. Speaking of which,
the soundstage is wider, deeper, much more precise. A Patrick O'Hearn
cut just seems to float there in front of you - the Stones' Sympathy for
the Devil is a huge party! On Dave Matthews' Say Goodbye the strikes
to the drum heads and cymbals are much more dynamic, less shimmer
around the cymbals and like everything is right there in front of you.
Ray Brown's bass has so much more detail to it, the piano and his bass
now aren't piled on top of one another but placed so that they are
easily picked out on the soundstage. And RIGHT THERE in the room
with me. The detial on Hotel California - wow - I can much more easily
hear the difference between the nylon string guitar and the steel string
one. Before it was there but now it's just so obvious you can't not hear it.

Obviously, I'm quite happy I finally decided to do this. Steve does great
work and even when above and beyond by securing the power cord and
providing some strain relief for it. I'm using Steve's bitmeister digital
cable - I've yet to compare it to my Aural thrills gold active digital cable.

Brian T.
July, 2004 (Turbomod/Jensen)

http://www.audiocircle.com/circles/viewtopic.php?t=12225

I received the modded unit on Tuesday, and I put it in my system
(currently consisting of the Dodson DA-218, using an Acoustic Zen 1m
Silver Byte cable, a Blue Circle BC3 Galatea mkII preamp, BC28 hybrid
stereo amp, and Focus Audio FS888 speakers). Compared to the stock
unit (one of which I still have and keep as a spare/backup), differences
were immediately noticeable...but clearly not broken in. The modded
unit immediately produced transients with much better speed, and low-
frequency extension appeared improved. However, there also appeared
to be some "chestiness" in vocals and a somewhat closed in sound on
solo instruments. Compared to the stock unit, there were some things
that were better, others that were worse, overall a difference (but not
necessarily an improvement).

Not to worry...

Steve told me that it would take about a week before the Jensen caps
would be broken in. Being anxious, I left the player running on "repeat"
with my favorite Bela Fleck CD (Greatest Hits of the 20th Century) overnight
for a few days straight, only giving it a break Wednesday evening during
a lightning storm when I turned off all my gear. By Thursday afternoon, I
found all the issues to disappear...no more chestiness or boxiness; instead
I was getting a sound wth clarity, dynamics, and overall presentation that
I hadn't experienced in my room/system before (when Zybar had originally
brought his EA S7700 over, we were using a lesser-preamp, and although
we had the more powerful BC206 in there, I recently replaced the Sovtek
6922 tubes in the BC28 with Electro-Harmonix 6922EH in my BC28 to
better effect). I want to emphasize CLARITY, because that's really what I'm
noticing the most...not that I wasn't getting decent sound before, but the
EA S7700 has just lifted an amazing amount of haze that I didn't even
know I had. The other thing that I'm noticing is that the system imaging
and soundstaging holds together much better at low volumes than it did
with the stock unit. In some demo situations, my worries about getting
the best performance when showing my system usually had me turning
the volume up a bit...I no longer feel that need. And this was only after
2-3 days of breaking in. I'm salivating at the idea that this will get even
better as we get through the week!

I'm thoroughly impressed with the overall performance of the Empirical
Audio modded S7700. It does make me wonder what I'd be writing here
had I gone ahead and gotten the Turbomod and/or Superclock2. Perhaps
one day I'll be able to compare them in my system and see if they make
a substantial difference given the technical design of my DA-218. But at
the moment, I am one happy audiophile-camper! Thanks, Steve!

Phil L.
August, 2004 (Basic mod/Jensen)


Sony DVP-S7000 Transport Turbomod
The Sony 7000 Transport mods consist of:
  1. Power supply component upgrades
  2. Rewiring of the digital output circuitry and speeding-up the SP/DIF
    signal edges from 25 nsec to 5 nsec risetimes.
  3. Tuning of the SP/DIF output to match 75 ohms exactly (it doesn't)

This mod makes the Sony 7000 a world-class transport.

  Mod Details:

Black Gate capacitors are swapped-in as well as high-frequency
decoupling caps. High-current Harris FRED's replace the bridge rectifier.

Jensen 4-pole cap replaces the input filter.

Digital output circuitry is rewired, components are added and
rearranged. More Black Gates added. Stillpoints EMI treatment.

Optional SuperTurboclock replaces the main oscillator.

  Pricing:

DVP-S7000 Turbomod - $800

Optional SuperTurboclock modification - $550

Please send us an email and we will arrange for payment and shipment.

  Reviews:

http://www.audioasylum.com/audio/digital/messages/73464.html


  Pioneer DV-47A Transport Mods

The Pioneer DV-47A has a similar direct-coupled digital S/PDIF output
to the Sony DVP-S7700, therefore similar mods apply. The DV-47A is the
first transport to equal the 7700 in performance. Very detailed and natural
with excellent focus and good midrange body. The mods consists of:

  1. Redesign of the digital output stage
  2. Power delivery improvements to the digital section
  3. Power supply improvements
  4. Optional Jensen 4-pole capacitor in the power supply and power
    resistor/relay to limit the power-on inrush current
  5. Optional SuperTurboClock
  Pricing:

Digital/power Mods - $500

Jensen 4-pole cap, Power resistor and relay - $230

SuperTurboclock3 - $550

Please send us an email and we will arrange for payment and shipment.

  Reviews:

http://forum.audiogon.com/cgi-bin/frr.pl?rdgtl&1097374526&read&3&4&

"Changing to the Pioneer the sound stage literally jumped. It moved
outward, upward, foreward, and back. It now extended three to four
feet outside each speaker, clear up to the 10 foot celling, somewhat
forward with the rear wall completely disolving . Depth of sound
became uncanny. Immaging has become unbelievable. It seems I can
now close my eyes and point to each instrument being played locating
exact positions within inches! Detail is incredible, I can hear finger
positons being changed on the frets of acoustic stringed instruments.
I can hear vocalists taking a breath and I swear in a coule of instances
I think I am able to detect Diana Krall moving her head from side to
side as she sings. The bass is tight and clean with real punch. The
midrange is sweet and liquid without being cloying and the high
frequency extension is fabulous. And as if all this was not enough the
sound is now against a pure black velvet background of silence. Now
I know what Steve means when he says one of his modifications has
magic. And this one has it in spades! Thanks Steve.
"

Paul M.
Oct. 2004


Pioneer Elite PD-65 Mods
The Pioneer PD-65 Transport mods consist of:
  1. Power supply component upgrades
  2. Rewiring of the digital output circuitry and speeding-up the SP/DIF
    signal edges from 25 nsec to 5 nsec risetimes.

This mod makes the Pioneer a world-class transport. You get all the
advantages of the "stable-platter" and great S/PDIF preformance as
well.

  Mod Details:

Black Gate capacitors are swapped-in as well as high-frequency
decoupling caps. Harris FRED's replace the bridge rectifier.

Digital output circuitry is rewired to reduce crosstalk, components are
added and rearranged. New pulse transformer.

SuperTurboclock3 - This change to the Superclock3 tightens the bass and
clears up the last vestiges of sibilance. The visceral impact of music is
astonishing after this mod.

  Pricing:

Complete Mods - $600

Superclock3 (modified) with installation - adds $450

SuperTurboclock3 modification - adds $100

Please send us an email and we will arrange for payment and shipment.

  Reviews:

http://www.audiocircle.com/circles/viewtopic.php?t=4150

"Recently, I had Steve Nugent from Empirical Audio modify my P-3A DAC
and was more than pleased. Based on the quality of his work, I decided to
take a chance and see if he could improve on the PD-65 as well. I received
the unit back from him a few days ago. And, once again I am very happy.
This is another mod that I consider very worthwhile. Basically, what he does
is reduce the jitter to extremely low levels. He mods the digital power
supply. And more importantly, he redesigns the digital output circuitry.
The improvement was noticed immediately. My system before this mod
was already very good. To be honest, all I was expecting from this was for
the upper end to become liquid smooth. What I heard was that and more.
The upper frequencies(female vocals)did become somewhat smoother - it
already was very good and there was not that much room for improvement.
The most significant improvements were in the following three areas:
1. The bass became very tight and focused. I was not expecting this at all.
It was truly a pleasant surprise.
2. The overall focus became dead on. The 3-D stereo effect is really quite
amazing now.
3. The micro-dynamics really stepped up. This part really is related to #2.
By hearing these secondary sounds so clearly, it causes the spatial effect to
really come to life. For all those who have PD-65’s, I think you will be quite
pleased with the performance Steve can extract from these units. I could
go on and on with details of how this mod sounds to me. But, to really
appreciate what he can do you would have to hear it for yourselves. I am
extremely impressed with Steve’s work and would highly recommend this
mod. Combine this with his modified P-3A and Bitmeister SP/DIF cable and
you have a digital front end that is something else."

Steve K.
July, 2003

http://www.audioasylum.com/audio/digital/messages/71179.html

Mr. Nugent's mods have raised the performance level of my transport to parity
with the performance level of my AN DAC. Stated another way, my formerly
"mid-fi" transport is now a "hi-end" unit. It was evident with the very first
cd I spun after putting the modded transport back into my rig how much of
my DAC's potential had been previously untapped. Startlingly improved
coherence, focus and "air" down to the bottom end (30Hz w/my speakers).
The difference was FAR from subtle. I've gone through enough upgrades in
building my system (details available on this site) to know when a change
is significant (for me, many haven't been). The PD-65 together with the mods
set me back over $4000 less than my AN DAC.

I have absolutely no affiliation with Steve Nugent or Empirical Audio.

I am simply an extremely satisfied and grateful customer. The results in my
rig tell me that Steve CLEARLY knows how to cost-effectively engineer hi-end
digital into the stock units he mods. He's a real gentleman as well, and was
very generous with his time both by phone and email.

John B.
August, 2003

http://www.audiocircle.com/circles/viewtopic.php?t=4416

My first impression of Steve Nugent of Empirical Audio was very positive.
He responded quickly to my email inquiry and was very generous with his
time by phone. He got into my transport the day after delivery, a very
pleasant surprise. More importantly, he listened to it in his own reference
system FIRST, before opening the case, comparing its pre-mod performance
to that of his reference transport. To me, this is no trivial matter. It told me
Steve is no mere "parts and solder slinger". He wanted to make direct
comparisons of my transport to his best, both before and after modification
to assess for himself the performance gains that resulted. After completing
the mods, he informed me about what he changed, in understandable not
overly technical terms. He let me know what was previously modded by
Musical Design, and what was not. For example, he told me that the BNC
output connector I use had not been properly terminated to 75 Ohms (thus
far totally negating a benefit I THOUGHT I was getting by using a BNC-BNC
digital cable from CDT to DAC!). Steve let me know how my money was
spent which I liked very much. His bottom line was that the result, to his
ears, matched his reference transport. Whoa!

What improvements do I hear?

1.) "Air" around instruments and vocalists is much greater. I think this is
what Steve meant when he said my CDT had much better focus post-mod.
Instruments and vocalists now seem locked into discrete positions in space,
to a greater degree than ever before. Have you ever closed your eyes to
better create the illusion of your system's creating a live performance in
front of you? I've done so many times. Now, I get that illusion with eyes
open as well. I've read many reports of speakers "disappearing", and have
gotten increasingly closer to this ideal as I've upgraded my system. This
CDT mod has really put my system over the top in this regard. That focus
thing highlights, in a very appealing way, interesting aspects of cds I know
well. Example: "Closer To It", Brian Auger's Oblivion Express - Brian
handles the vocals here(which he didn't for his live gigs) and his voice is
actually multitracked at the far left and right of the stage, with his
incomparable Hammond B3 playing taking the center. An interesting twist,
never more enjoyable than now.

2.) Soundstage DEPTH is now very apparent, especially on live recordings.
My system was already throwing a very wide soundstage with nice center
fill, but FLAT. Just prior to writing this review I listened to a Elvis Costello
and the Attractions' 1978 "Live at the Mocambo" cd and got the sense of
a 3D vocalist and band, rather than cardboard figures.

3.) Tight bass - This is a subset of the improved focus, but deserves
mention in its own right. My speakers are fairly flat to 30 Hz, and I want
to hear notes and chords as distinctly as possible to that floor. Steve"s
mods really cleaned up the mud. I have two "acid tests" for assessing
bass reproduction in my system. Disc #2 of Miles Davis' "Black Beauty -
Live at Fillmore West" NOT an audiophile recording, with hiss at the start,
and a very audible transient dropout about a third through the disk, but
(to me) the epitome of improvisational jazz. Problem: trying to make out
Dave Holland's electric bass at left-center when everyone but Chick Corea
is essentially coming out of the left half of the stage. I can FINALLY
distinctly follow most of his foundation for the the three great pieces on
this disc. The Who "Live at Leeds" In a classic power rock trio, there's no
mistaking Entwistle's playing out of the left speaker, but he's got a pretty
"fat" sounding bass that has tended to blend into Townsend's guitar when
Pete is at the lower register and both are essentially soloing at once
(particularly on"My Generation" and "Magic Bus"). The improved bass
focus with Steve's mods really shows up here!

4.) Microdynamics - For my system, this aspect of the music has always
been most challenged by recordings with lots of multitracked percussion
elements, especially from upper-midrange on up. My "acid test" has been
Weather Report's "Black Market" - The title track HAS to hold the record
for cymbal crashes and has driven me from the room with earlier stages
of my system. They are now tight to the point that, for the first time, I
realized that Chester Thompson is not doing all the work-at front right,
Alejandro Acuna clearly moves from congas to cymbals/gongs in the
course of the piece. Another treat: Black Uhuru's "Sinsemilla" - the Sly
and Robbie signature production style gets no better than on this disc,
with heavily multitracked percussion, gits, keyboards. My modded CDT
opens the mix up in all its lush beauty.

In summary, the results of the Steve Nugent/Empirical Audio CD transport
mods have far exceeded my expectations. Add to that the very reasonable
cost and Steve's personalized service, and it's a no brainer. Big time.

John B.
August, 2003


  Denon 5900 Transport Mods

The Denon 5900 is a very popular player, but makes a superb transport
as well. If you use it for home theater, this mod is a must. The mods
include:

  1. Power Supply upgrades, including HEXFREDs, Digital Supply filter cap
    or optional Jensen 4-pole cap, output Black Gate caps and regulator
    upgrades
  2. Digital Board upgrades, including rewiring of entire digital path,
    redesign of digital output circuits (transformer-coupled), tuning to
    precisely 75 ohms
  3. Optional SuperTurboclock3 (recommended) to replace jittery on-board
    oscillator module - mounted and wired professionally

Our customers that have had this mod report that it is like getting a new
preamp. Clarity, focus and dynamics are improved substantially.

  Pricing:

Transport Mods - $1000

Optional Jensen 4-pole cap - adds $150

Optional SuperTurboClock3 - adds $550

Optional 75 ohm Canare BNC output connector - adds $100

Please send us an email and we will arrange for payment and shipment.

  Reviews:

Electrocompaniet EMC-1UP CD Player Mods
Since the Electrocompaniet player contains essentially the same
upsampling DAC circuitry as the Perpetual P-3A DAC, it makes sense to
use this as a CDP as opposed to a Transport. It is also more cost effective.

The Electrocompaniet mods consist of:

  1. Transport board mods
  2. Power Supply board mods
  3. DAC board mods
  4. Analog board mods
  5. Wiring harness replacement for power feeds, analog (Perfect Crystal
    silver) and digital (75 ohm)
  Mod Details:

Black Gate and low ESR Nichicon capacitors are swapped-in as well as
high-frequency Hi-Q decoupling caps. Surface-mount low-ESR decoupling
caps are soldered directly to the legs of the transport controller IC. High-
current Harris FRED's replace the bridge rectifier for the Transport voltage.
Internal digital circuitry is rewired. Harnesses for Transport power, Digital
signal and analog signals are replaced with low-loss high-performance
versions. The digital signal from the transport section is direct-coupled to
the DAC module in the CDP mods.

In the Transport/CDP mods, additional buffering is added to drive the digital
outputs, as well as transformer coupling. It works both as a CDP and Transport
with this option.

The CDP mods result in the best overall sound, but they disable the digital
outputs. The mods are now similar to those done on the ECD-1 DAC, so the
price has increased a bit. The complete mods take approximately 5 days to
complete.

Modded Superclock3 - This tightens the bass and clears up the last vestiges of
sibilance. The visceral impact of music is astonishing after this mod.

  Pricing:

Transport Mods only - $750

Complete CDP Mods for analog output improvement - $1600 (disables
S/PDIF and AES/EBU outputs)

Complete Transport and CDP mods - $1880

Superclock3 (modified) with installation - adds $450

SuperTurboClock3 modification - adds $100

Please send us an email and we will arrange for payment and shipment.

  Reviews:

http://forum.audiogon.com/cgi-bin/fr.pl?ddgtl&1051888176&openflup&27&4#27

I just had to drop you a few lines to say thanks, for this extraordinary
player, and for your understanding at my reluctance at having my
Electrocompanient EMC-1UP modified. After all, the EMC-1UP received
a rave revue on Stereo Times website, and it replaced the Sony
SCD -1(SACD) as the reference player. Listening now to the EMC-1 UP
with the full mod, I was struck by how the sound was now bolder/bigger
and the background now blacker/quieter than it had been. The thing I
loved about the EMC-1UP before the mod was what it did to the human
voice, so natural. Now with the full mod, I was shocked to realize that
I had been listening to a great deal of sibilance. The human voice no
longer sounds like just a mouth before you in space. It now comes  
with a chest and throat attached, which gives a greater feeling of
presence, and an image that is now locked in space. I love this, since
most of my listening is to vocals. The second thing I loved about the
CDP before the full mod was the analog like way that it rendered the
entire spectrum, top to bottom. With the full mod, WOW,  the player
now has a greater ease and relaxing way about it, and it was no slouch
in this department before the mod. Now the analog sound reaches
down to the bottom, with air and dimension to the Instruments. Steve,
I had an excellent player before. With your Full mod I now have an
extraordinary one.

Larry B.
Sept. 2003


Shanling SCDT-200 CDP Mods

The Shanling T-200 is the ONLY CDP so far that gets a Turbomod rating.
This is our reference component rating. After mods, the depth and detail
rendering rivals the best on the planet, including our own reference.
Dynamics are improved significantly for both SS (direct) and Tube outputs.
Vocals are sibilant-free and very smooth and natural, both SS and Tube
outputs. The tubed output is a bit smoother, but also a bit less dynamic
with less HF extension than the SS "direct" outputs. This player definitely
delivers the "magic" from either output though. The depth of image and
layering is unbelievable and the detail back there is super-focused.

  Mod Details

The mods are applied to the power supply, DAC, output solid-state
and tube analog electronics. They do not improve the S/PDIF digital output.

1) Power supply mods - Black Gate tanks, Freds etc..
2) DAC power mods
3) Change DAC output filter caps
4) Add or upgrade Superclock2 module
5) Improve all Op-Amp HF decoupling caps
6) Replace output driver Op-Amps with high-performance types
7) Replace signal coupling caps
8 ) Improve Tube HF decoupling caps
9) Improve Tube signal coupling caps
10) Wire the tube and SS outputs with our Perfect Crystal Silver wire
11) Eliminate 4 op-amp sockets

  Pricing:

Full Turbomod to stock unit (adds modded Superclock) - $2650

Turbomod to PartsconneXion level-1 mod (adds modded Superclock) - $2350

Turbomod to PartsconneXion level-1+ mod (mods to existing Superclock) - $1900

SuperTurboClock modification - adds $100

Mods to other modified units - We will quote you after examining the unit.

Please send us an email and we will arrange for payment and shipment.

  Reviews:

http://forum.audiogon.com/cgi-bin/frr.pl?rdgtl&1081629290&read&3&4&

"I usually don’t do reviews (actually never). After all, we all have two ears and
our own tastes. Not to mention, a review of just one piece of equipment in a
system is sometimes meaningless to someone with different associated
equipment and rooms. However, I also realize that auditions may not always be
possible and that there is some value in the third party review process. Hence,
I figured I’d review my least known component and the hardest to audition –
the Shanling SCD200 Turbomodded by Empirical Audio. To-date it’s the first
one modded by Empirical Audio, so this should be the only review, although I
suspect that will change soon.

If you want to get right to the review of the Shanling, skip the next few
paragraphs or so. My pet peeve though with reviewers is the lack of background
information on them and their system, so I’ll share a brief synopsis.

I’ve been in this hobby since I was 15 years old (now 35). I’ve seen and heard
quite a bit of equipment over those years. I regularly attend both the Stereophile
and CES shows and keep tabs on my local dealers with the latest and greatest.
Not to mention, the area audiophile group has some noteworthy members who
have pretty impressive systems. While I’m not claiming to be some audiophile
Jedi, I feel very confident in delivering an accurate review that may be helpful.
For those interested, I’ll give a quick rundown of my associated equipment.

Spendor S9 speakers – After owning these speakers for almost 2 years, I still
find no better way to sum up the S9 than Spendor's own words…"The S9 has to
be heard to appreciate the grand scale of its superbly integrated sound. Whether
you play loud or soft, music or film, the S9 has the uncanny ability to convey
the energy and emotion of the performance. The bass is rock solid, treble delicate
and airy, and the mid range captivatingly realistic. Often you'll feel you could
reach out and touch the performers."

While the last sentence is somewhat cliché, the description is pretty accurate.
In fact, the only adjective I might add would be “intoxicating.” They simply sound
like music and not a bunch of drivers. Probably the best all-around Spendor model
since the BC-1. Caveats -- likes solid state amplification or high power tube amps.
May not have the midbass hifi sounding punch some prefer. Also not as “alive” at
very low listening levels.

Conrad Johnson Premier 17LS – Closest thing you can get to the sound of the
incomparable CJ ART at less than $5000. I could live happily with other preamps
in this price range, but the combination of features, sound quality, and CJ pedigree
won me over Caveats -- need to keep cable runs short and low capacitance or the
performance drop-off from the ART and 16LS is more steep. Inverts polarity and
has a relatively high gain.

McCormack DNA.5 Rev. A Platinum Monoblocks – The guy who was modding things
before modding became hip- Steve McCormack - went all out and I have everything
done that he knows possible for now. Is it the best solid state amp??? Well, no amp
is best for all applications, but I can safely say if you have these amps you can’t be
too far from the best regardless of price. I’ve had more than one aficionado of the
venerable JC-1 amps admire these amps, and I’ve heard many stories of Levinson
and Krell amps being embarrassed in direct comparison. Music just explodes around
you with a sense of effortlessness and liquidity that transport you out of stereo
listening and into the music.

Accessories – I use a few, but the most noteworthy is the BPT 3.5. Good enough to
be considered a component, not accessory. Almost a neccessity in some environments.
Caveats – I’ve heard some owners have a hum issue and it’s not the bargain it once
was at $1400.

Room – My room is small – 12 x 14 x 8, but heavily treated and totally dedicated to just
two-channel listening. It measures pretty flat although there is a slight suck out around
63 Hz. I do get low frequency extension down to almost 25 Hz without much drop-off.

I suppose that’s enough (or too much) background. Now to the main attraction – the
Shanling.

I was intrigued with the Shanling SCD-200 with the Level 1+ mods from
Partsconnexion/Underwood soon after it came out. I usually stick with companies that
have a pedigree and have been around for awhile; however, I noted that Shanling met
ISO 9001 certification standards, which is fairly impressive and gave me some comfort.

I did a brief audition in an unfamiliar environment (not smart), and decided to buy it
since it seemed to be better than my previous redbook-only player. In hindsight, it
definitely was, but I also think I was fooled early on by my first extensive exposure to
DSD SACD recordings into believing the player sounded better than it really did.

Once I got it back into my system and played it with familiar material in redbook, I
slowly started to realize weaknesses that I missed or were masked in the brief audition.
Sibilance was a problem and the unit lacked extension at the frequency extremes. The
sound was not particularly dynamic, the soundstage was confused, and the overall
presentation was opaque. I almost thought it was my associated equipment, but
switching out the Shanling on occasion proved otherwise. In addition, there were some
quirky things about it mechanically. First, it would not read approximately 1% of my
collection. I could never put a finger on why, and apparently they have come out with a
fix, but it takes shipping it to Japan and 3 months. Also, the drive mechanism is
somewhat slow and noisy when reading a disk. When playing, it’s much quieter although
it is an open air top-loader and can be heard if your environment is otherwise silent. On
the plus side, it is very attractive and truly an aesthetic marvel compared to most CDPs.

I did have one actual malfunction that required service and a small part to be replaced.
Mind you, the customer service was excellent and turnaround was only a couple weeks.
Nevertheless, I became concerned about its long term prospects both mechanically and
sonically. I don’t want to go overboard though. Compared to what else is out there (I’m
talking strictly digital, not analog), I’d say the Level 1+ is pretty decent sonically, but
still a good bit away from the best. When the 6moons.com review came out, I was
somewhat surprised by the tremendous review, which basically inferred it was world-
class. Perhaps the plethora of poor sounding CDPs on the market makes a decent CDP
seem better than it really is. Or maybe the reviewer was fooled as I was early on. Anyway,
I knew I could do better, so I started looking for alternatives. Sound wise, the Meitner
was my favorite alternative, but a few other things about the Meitner turned me off, so
I kept searching. Gradually, I learned that my best course may be to just have the
Shanling further modified.

Steve Nugent at Empirical Audio was the guy I decided to try since he appeared to have
the background and expertise required for such a custom project. Here’s where I will stop
and give a plug to participation in local audio clubs, and, specifically, Duke Lejeune
(Audiokinesis). I probably wouldn’t have heard of Steve Nugent if Duke hadn’t sent me a
link with the interview done on Steve by Positive Feedback Online. Ironically, it was over
a year ago and had nothing to do with CDP mods. We had just been over at another club
member’s house listening to JC-1s when we realized that they just weren’t sounding right
without a preamp. Sure enough Duke later found this interview where Steve Nugent says
essentially the same thing. I was intrigued by the rest of the interview and noted that
Steve seemed to have the ability to go beyond mere parts-swapping mods. Recently, when
the issue came up with the Shanling, I retrieved this from my quickly fading memory banks
and decided to email Steve about doing this custom project. I basically gave him carte
blanche to do whatever was necessary to make it truly world class. He immediately
embraced the project and started as soon as I shipped it to him. In short, the experience
was exceptional. He kept me constantly informed and detailed each step of the process.
Overall, I believe it took him approximately 24 hours of work and a host of new parts/design
alterations. The Shanling was back with me within a matter of a couple weeks. You can go
to his website or email him to get the details, as I will just focus on the end result.

In short, all I can say is Mission Accomplished! I wanted Meitner-esque level performance,
and we are pretty much there.  (Steve actually believes it’s better than the Meitner on
redbook, and he has more experience with the Meitner than me.) The Meitner does offer
balanced outputs and is probably better running direct to amps, but the Shanling is much
less expensive and more attractive. Either way, whichever is better is strictly splitting hairs,
in my opinion. The bottom line is that both are absolutely stunning. I still can’t believe how
much changed with Steve’s mods to the Shanling. Every aspect improved substantially, but
the thing that really stands out is the increased authority and dynamics. Sibilance is totally
gone and soundstaging is precise, layered, deep and wide. It’s actually quite hard to put
into words or even audiophile jargon, but anyone who’s gone to the various shows knows that
something is different when they walk into a room with a Meitner front-end. Yes, it usually
has $50,000+ of associated equipment, but so do many other rooms that don’t have that
same magic. There’s just a continuity to the sound that’s analog like. Images appear in 3
dimensions, not 2, and instruments sound like they are really being played (i.e. you can hear
fingers or prop hit an instrument with an unprecedented authority and sense of realism.)

Let’s see if I can’t break it down further using specific music as a guide. Christian Mcbride’s
CD – “Gettin’ to it” – is a fairly common audiophile reference CD. It will sound good on
almost any decent system, but there are chances for it to highlight the spectacular. For
example, the first cut includes a bass, trumpet, sax, piano and drums. Many of those are
not easy for digital to accurately reproduce without sibilance and/or lack of dynamics, control
and extension. Even fewer can provide these things at high SPLs while still preserving inner
harmonic detail. Only the elite can give you the feel of the trumpet valves being pressed
and a sense of the sound cascading from the bell of the trumpet, all the while producing
every other one of those instruments as a coherent music ensemble. It’s the combination
of dynamics, detail, control, authority, imaging and organic presence that’s so difficult, but
the twice modded Shanling delivers. The last cut is the one I most often hear at shows from
this CD. It’s strictly McBride and his bass. Again, it will sound excellent on almost any
system. However, a few things will separate the good from the great. Primarily, it boils
down to the illusion created by the sound system. Most systems will just reproduce the
sound from the specific areas of the bass. Paradoxically, it will be precise yet overall nebulous.
The spectacular system will recreate the grand scale of the entire instrument with sound
coming from every inch of the strings and discernible full decay. You sense the entire size
of the instrument – the body, neck and all – not just the strings. Dynamics and detail are
recorded excellently, but, again, hearing the pluck of the strings is different from feeling
the pluck of the strings and sensing the exactly how far they are being stretched and
reverberating. On many systems, things will sound a little too “fast” and “crisp” because
a lot of the decay, detail and nuances are being lost.

Let’s try a different CD. First Impression Music makes exceptional recordings. “Oh! That Cello”
is an XRCD that is definitely audiophile quality. Unlike McBride’s CD though, I’m sure it can
be tough on some systems. The first cut is a good test – Shenandoah. Dynamics are the key
here. You truly get a sense of why this recording was an inspiration to many early American
travelers. When the Chinese gong is struck, you should not only feel it in your gut, you
should feel as if the whole room is shaking from its foundation. Pitch definition should be
excellent with no boominess. Without proper LF extension and authority, the song will lack
much of the emotion truly possible.

While we’re on percussions, the DSD SACD sampler that comes with the Shanling has a
Robert Hohner percussion ensemble which is very impressive. It was one of the better
sounding cuts prior to Steve modding the Shanling, but now it is even more incredible.
Before, the drums were comparatively opaque sounding lacking the realistic authority of
being struck. Also, the soundstage was confused and fuzzy. Afterward, the authority and
dynamics are much more lifelike. The soundstage, in particular, is exceptionally deep,
precise and layered. In fact, it’s so sophisticated that you can discern even the smallest
of differences in depth and know exactly how the ensemble was laid out.

More examples are possible with audiophile recordings, but any good system will expose
a degree of my observations above with audiophile recordings. The hard part is
communicating how much farther in degree the custom modded Shanling takes things.
Actually, the more significant differences are notable with recordings thought not be
audiophile quality. In fact, recording quality is one of the biggest scapegoats for poor
sounding systems. The reality is that few recordings are truly horrible, unless you are
listening to a lot of pseudo top 40 stuff. True, some recordings expose sibilance and other
deficiencies worst than others, but don’t blame the messenger.

For example, Eva Cassidy and Norah Jones CDs sometimes get dinged for weak recording
quality. While not spectacular, I find them both quite acceptable. They certainly are good
enough to communicate the emotion of the songs in a fairly dynamic and detailed fashion.
They will only be irritating or fatiguing on systems with sibilance issues. Both of their
voices have a different yet similarly ethereal quality, and Norah Jones particularly floats
in a three dimensional space on the SACD version.

While on the topic of Eva Cassidy, she is quite a marvel. No one takes ownership of a
covered song like she does. “People Get Ready” from the “Songbird” CD is one track I
always enjoy no matter how many times I hear it. The last 30 seconds of this song can
be an incredible treat. (Although the recording engineer who faded out the last 5 seconds
should be shot.) Anyway, I play this cut loud. This cut and the next cut – “Oh, I Had a
Golden Thread” -- truly test a system’s ability to stay composed with both high pitched
female voices and dynamic material. I spend this kind of money on audio equipment to
specifically have this reproduced without fail, so I can truly enjoy the magnificence of
performers like Cassidy who are unfortunately dead and gone.

In short, if you like female vocals, this Shanling will deliver. I tried Jennifer Warnes, Holly
Cole, Ani Difranco, Alison Krauss, Sinead O’Conner Patricia Barber, Diana Krall, Janis Ian,
Carry Newcomer, and more including SACD and redbook versions without fail. No sibilance
and all had that ethereal 3D quality with greater ambient information too. For example,
Sinead O’Conner’s cover of “All Apologies” on the “Universal Mother” CD is spectacular.
The Shanling not only does her voice justice, it also gives you the echo and subtle spatial
cues to feel exactly the time room she was in and transports you there, similar to the
infamous Cowboy Junkies “Trinity Session”. Some CDPs may miss a lot of this info and
short change you on the experience.

Not to be sexist, I also tested male vocals, which were equally inspiring. Matthew Ryan’s
“Concussion” is quite an interesting CD whose simple recording may not work well on all
systems. The key to enjoying his work is following his somewhat haunting, snapshot
lyrical style. It’s also intriguing to hear him mix the sound of a cello, tambourine, pedal
steel, bass and electric guitar, ambient organ, harmonica and different drums and cymbals
all in the same song. He also pulls off integrating Lucinda Williams vocals with his raspy
and ornery voice in a separate song. Anyway, before the mod, his voice had a level of
sibilance and was somewhat flat. Afterward, no sibilance and a much more fulfilling,
hearty and coherent presentation. I was frankly also surprised how much more detail
was revealed. Close your lips and then quickly part them. That subtle sound is now clearly
heard where it wasn’t previously.

Greg Brown is one of my favorite male vocalists, although he can be little tough to
reproduce, especially at higher SPLs. I’ve heard it sound atrocious on quite expensive
associated gear where the CDP sabotaged everything. It wasn’t terrible before on the
Shanling, but now it is close to a night and day difference. In fact, all the improvements
I’m describing are honestly not subtle. No question anyone could hear them easily – even
non-audiophiles.

I hate hyperbole in reviews and I’m sure this is starting to sound just like such, so I guess
I should wrap this up. Hopefully, the review was helpful and may give someone comfort
who was debating whether to have similar work performed by Steve Nugent. In short, the
greatest differences were the tremendous jump in authority/dynamics, extension at both
extremes, removal of sibilance and clarified soundstaging. The combination of which can
best be described as just “magic”.

I should end by pointing out one last feature. The Shanling has 2 sets of outputs – tube
and solid state. Both were modded by Steve and my impressions of the differences are as
follows: Overall, I think I slightly prefer the SS outputs.  In almost every area, they seem
just a tad better with even more authority.  Both outputs stay totally composed even with
difficult material and high SPLs, but the SS gets the nod if I had to give one.  The tube
outputs probably have a deeper soundstage versus the SS outputs, which are a little bit
more forward.  I do think the tube outputs may add that 3rd dimension a hair better in
the midrange and the layering of the soundstage may be more sophisticated and precise.
Either way, it’s exceptional and nice to have this option.

Mechanically, I also want to point out that Steve’s mods can’t fix the unreadability of some
CDs. Again, this requires shipment to Japan and a 3 month estimated turnaround. Newer
models may not have this problem. The quirky and slow drive mechanism is also something
I decided to just live with, but should be a factor to consider.

Also, in case you are wondering, in hindsight, I should have just bought a stock Shanling
and shipped it to Steve to get modded. The Level 1+ Underwood mods can all be
superceded by Steve’s work and would have saved me money. Any other questions, feel
free to email.

Other primary recordings used: LA Four – Going Home, Jorma Kaukonen – Blue Country
Heart (DSD SACD), Willie Nelson – Stardust (SACD), FIM SACD Audiophile Reference, and
various Keb Mo, Jesse Cook, Victor Wooten, Marcus Miller, classical pieces.

Jason M.
April 2004


Sony DVP-CX777es Transport/CDP Mods

The CX777es is a jukebox player that can hold 400 disks. It has really
disppointing sound in its stock form for a Sony ES product. The good news
is that it can be improved dramatically and makes a good Transport when
using an outboard DAC after mods. The imaging is fairly poor and dynamics
not great in stock form. Mods are available to improve the analog output
or the digital transport performance or both. As a CDP it is quite excellent
after the analog mods, with modded Superclock2 (recommended), rivaling
our reference separates. As a Transport, it's performance does not match
the Sony DVP-S7700, but comes close with the Superclock2.

  Mod Details:

Common to Digital and Analog Mods:

  1. Bridge rectifiers are replaced with Harris FREDs
  2. The main filter cap is replaced with a Black Gate tank capacitor
  3. Several regulated power caps are upgraded to Black Gate caps

Digital Mods only:

  1. The digital path is rewired to improve speed.
  2. The output S/PDIF driver is sped-up and the voltage increased
    (Prior to mods, the S/PDIF output has a peak-tp-peak swing of only
    ~200mV and the risetime is a miserable 30-50 nsec) After mods,
    the output is a strong 700mV with a 10 nsec risetime. 1m S/PDIF
    cables can be used safely after mods.
  3. The impedance is matched precisely to 75 ohms.
  4. Low and high frequency decoupling caps are improved on both the
    output and main control boards.

Analog Mods only:

  1. DAC power delivery is improved with Black Gate and HF decoupling
    caps, both surface-mount and through-hole
  2. PLL power delivery is improved with Black Gate and HF decoupling
    caps
  3. OP-amps replaced with high-performance types
  4. Op-amp power delivery improved with Black Gates and HF decoupling
  5. Post-DAC filtering improved
  6. AC-coupling of analog stages eliminated
  7. Analog filtering removed
  8. Bulkhead RCA connectors replaced with Vampire OFC/Teflon RCA's
    (four output connectors replaced with two)
  9. Perfect-crystal silver wire from output stages to RCA's

Modded Superclock3:

  1. Mods to the module that increase speed, reduce jitter and match to
    the clock-net transmission-line
  2. Mods to make it compatible with 3.3 Volt operation of the PLL chip
  3. Professional wiring and sheet-metal work for sturdy mounting of the
    module
  Pricing:

Digital mod - $650

Analog Mod - $800

Digital and Analog Mod - $1300

Furutech IEC - $100

Modded SuperTurboclock3 - $625

Please send us an email and we will arrange for payment and shipment.

  Reviews:

http://www.audioasylum.com/audio/digital/messages/95994.html

"Let me start by explaining what my goal was when I first began
corresponding with Steve. I had quite a large sum of money invested
in my system and I had some very nice CDPs come and go, to include
Audio Aero's Capitole MKI CDP for a year or so. Although the sound
from these players was very good, I found that I tended to use and
enjoy my system more when I had a changer in place. I then decided
to invest in the DVP-CX777ES and have it modded by Steve after using
the player un-modded for appoximately 6 mos. or so. I noticed that
Steve had completed a mostly digital mod on one of these units in the
past. After corresponding with him, he thought that the unit might
function very well as a CDP after an all-out analog mod assault. I then
decided to give this knowledgeable electrical engineer free reign to
complete whatever mods he thought would prove beneficial. What
ultimately resulted is one of the finest, if not the finest CDP I have
ever heard in my sytem or any of the CES shows I have attended.
Let me explain...

When I first received the player back from Steve, I had to take a look
under the hood and see what all changes I could see. What I found
was work that was completed so professionally and neatly that my
mouth gaped open for a period of 60 seconds or more just gawking
at it. Now I couldn't wait to plug it in. After letting the unit play in
my system for approximately 24 hrs. I sat down for a listen. What I
initially heard was fatigue-free music with very focused images. However,
the sound was darker and the vocals were somewhat congested. The
high frequecies seemed to be somewhat rolled off. After remembering
reading David Robinson's Positive Feedback review of the Superclock 2,
I agreed with his initial feelings of the sound he heard during break-in.

After a solid week or so of constant playing, things began to change
dramatically. The congestion was gone and the high frequencies were
totally transformed. Highs are now extremely detailed, but suprisingly
pleasant. I find myself being drawn into high notes that other CDPs
made me want to shy away from in the past. Both sides of the frequency
spectrum have now become extremely dynamic without any fatigue. I
immediately began thinking that this was a damn-good investment. I
then decided to try playing some red-book CDs that I was unable to listen
to in the past due to fatigue and just plain old bad recordings. Amazingly,
I could now tolerate and even enjoy listening to many of the CDs I was
never able to listen to with other CDPs. It feels as though this modded
player is intelligent enough to correct the bad CDs and take well-recorded
CDs to unbelievable levels. Truly remarkable...! The sound coming from
SACDs and DVD-A CDs is even better in many ways.

Conclusion:

If you enjoy the convenience of a universal changer but always felt like
you would have to sacrifice sound quality when comparing it to the best
CDPs on the market today, then this is a no-brainer mod for you. I would
be glad to put this CDP up against the best players at CES this year and
have people just sit there and stare at it with their mouths open when
this thing begins to play. You just have to hear it to believe it!
Thank you Steve Nugent."

Stephen G.
November, 2004


Perpetual Technologies P-3A Turbomod

The P-3A mods consist of two Mods with optional Superclock2:

  1. Power supply component and Op-Amp upgrades - similar effect as
    ModWright level2, but with some different components and implementation
  2. Turbomod - rewiring of the analog output circuitry as well as parts deletions
    and additions

Mod I Improves transient response and extension. The noise level is reduced and
distortion levels are reduced.

Turbomod transforms the DAC into a world-class piece of equipment by further
reducing noise and distortion and increasing bandwidth and transient response.
Much more dramatic than the effect of Mod I.

If you want a preview of what Turbomod will do, just remove the P-3A circuit board
from the case and play some music through the P-3A. It sounds much better, but
it shouldn't. Turbomod makes it sound even better than this, and there is no
difference whether the board is in or out of the case after the mod. When you do
this, insure that the circuit board is on some plastic and touch metal with your
hand to avoid electrostatic discharge which can damage it.

The audible effect is dramatic. It will sound very vinyl-like compared to the original
DAC. Sibilance is eliminated and the soundstage between instruments is jet-black.
Front-to-back layerin