Core Power TechnologiesUSBe PerfectnewCore Power Technologies USBe Perfect-6 Great reviewsAsk us about 6 months no Interest thru PayPal Free Freight anywhere in the world Sale price is $279.00. Get a USBe Perfect and one of our $5...279.00

Core Power Technologies USBe Perfect-6 Great reviews [Expired]

no longer for sale

          Ask us about 6 months no Interest thru PayPal

                   Free Freight anywhere in the world

                  Sale price is $279.00.

          Get a USBe Perfect and one of our $500.00 Diamond Series USB cables at only $449.00. Call for this deal.


                   USBe Perfect for only $279.00 now.

The USBe Perfect is a powered Reference USB interconnect solution.
is quite unique as it is not just a de-jittering device. It has a DC to
DC converter and is a full USB regenerator. It makes a new super clean
and quiet USB signal and then it je-jitters that signal. It will turn
your computer into a high end music server. It even makes good music
streamers and servers better.

Read the latest March 2021 review in Stereotimes where Greg Voth sums with:

"The USBe Perfect makes digital audio sound better and helps resolve the USB 3.0 cable length issue. The USBe Perfect is an accessory l consider an absolute necessity.

of 03-12-21, the USBe Perfect's $299.00 INTRO SALE price is still in
effect (delivered worldwide). In my case, the USBe Perfect was, in fact,
the "perfect" solution to my long-standing USB length predicament… the
fact that it ALSO improved my rig's sound quality through USB, well,
that's nothing short of gold!  I find it fascinating that the solution
to my long-lived USB cable length issue came from a friend.

Read the entire review at:

Here is an Aurender users feedback: "I’ve
had my Aurender N100H (which is USB only) and Hegel HD30 DAC combo for
several years now, and have never been fully satisfied with the sound.
Imaging has always been indistinct (hard to pin-point localize), the
midrange a bit dry, and overall lacking a palatable organic quality that
has kept me from emotionally connecting as fully with the music as I’d
like. I’ve improved things along the way... stillpoint ultras under both
the Aurender and DAC made a noticeable improvement (cleaner midrange
and highs, slightly improved imaging), better power cords, Inakustik USB
cable (sounded better to my ears than the "Curious Cable" that preceded
it) and the biggest improvement up until last week... the Inakustik
Power Conditioner which quite honestly took the sound of my whole system
to a new level. However, as much as the sound improved with all of
these changes along the way, it still lacked the organic textures and
liquid lushness that I felt... even if just in a small quantity... would
really balance out the sound."

changed last week. On a hunch, and given the sale price (from Underwood
HiFi... one of the advertisers here at Audiogon), I bought a Core Power
Technologies USBe device for $299 figuring if it didn’t benefit my
system I could probably sell it for not too much of a loss. All of the
reviews that I read which lavished praise on this device all seemed to
be systems with "non audiophile" digital sources... like file servers
and laptops... digital ecosystems where it wouldn’t be hard to imagine
that a device offering even marginal improvement in jitter and/or
noise-reduction might bring a sonic benefit. But with something like the

stated, the USBe has completely revolutionized the sound of the
Aurender. The improvement is obvious and profound... imaging is
pin-point focused, the midrange relaxed and easy, highs airy and
uncongested, musical textures all differentiated and distinct... timbres
are more real and instruments sound "different from each other" as if
some sort of sonic-signature that had painted them all in a similar cast
has been removed. Vocals have an added solidity and liquid character
that allows them to cross the "emotionally involving" line for me for
the first time. Oh, and bass... bass is tighter, more defined, and more
"present" in a way that’s sometimes startling."

folks. Honestly if someone had told me they had swapped out my DAC for
some upper-tier $5-10K component I’d have believed them. I can’t promise
that everyone and every system will be impacted the way I was with
mine, but if you’re using an Aurender N100H (or any USB music server you
feel might a weak link in your chain) you owe it to yourself to give
this a try. I’ve spent far more money than this on power cables which
improved the sound to a lesser degree. The USBe is the real deal."

Here is another hi end server user s feedback: " I bought the CPT USBe based on both professional reviews
and feedback here on audiogon. Prior to the purchase I sent a message to Walter
with some questions and he responded quickly. He mentioned that there were
other Aurender owners who purchased this product who were pleased with the results.
I ordered it late on Thursday and received it on Monday morning."

"I immediately connected it to my Aurender while still cold
and knew this product was something special. But before making any judgement, I
decided to let it play continuously for the next 3 hours to let it break in a
little. I first compared several songs sung by females that tended to sound
bright. Not only did it reduce the brightness but also some of the digital
glare. Their voices were cleaner and the instruments more refined. I then moved
to male voices that were recorded in the 60’s and 70’s such as The Beach Boys
and Moody Blues. Again I had the same results."

"Moving over to piano recordings, Bill Evans at the Village
Vanguard couldn’t sound any better as if he was playing in front of me. Not
only did the piano project into the room, the individual notes were more
refined along with the accompanying stand up bass and drums. The bass lines
were more pronounced, the drums were cleaner and the cymbals were no longer

"The most noticeable difference was when the USBe was
removed. The soundstage diminished and the music more congested. I thought my
system sounded quite good until I installed the USBe."

"I took a $300 chance since there are no returns but couldn’t
be any happier. I’m not affiliated with this product as some of you know me for
several years now. I recommend anyone with a USB cable give this item a try.
Thanks Walter"

Yet another great review. In the latest November 2020 Shoestring Audio. Here are some quotes:

"the difference with the USBe Perfect inline makes itself known quickly. Notes are rounder, smoother, and warmer."
the USBe Perfect inline, the song takes on a more hi-res tonality. This
setup is more musical, more organic, and carries a new depth."
""After hearing the same eight minutes, I cannot wait to get the USBe Perfect back inline again."
the “big things come in small packages” cliché is difficult when
talking about something like the USBe Perfect. It is such a tiny device,
yet does so much, sonically."
"for those trying to achieve a less digital sound out of their streaming source, this is a very real solution."

Read the entire review at:

See the latest great USBe Perfect review from Here are a few quotes and conclusion:
"Then I listened with the USBe Perfect."
"Suddenly I found it difficult to focus on work. I
thought I knew everything this album had to give. Layers upon layers of
vocal harmony were revealed in high resolution like a 4k display for
your ears. Hence it went, with the remainder of the album as if heard
for the first time. Each replay revealing another exquisite detail in
sound, song composition, or production."

I experienced the familiar as if I had never heard this track before.
The resolution of fine musical details, harmony, and depth of perception
was significantly enhanced."

Conclusion "In
closing, if like me, you are using USB to transfer digital files from a
hard drive or streamer to a DAC, consider the possibility that a higher
level of performance awaits to be unveiled with a jitter reduction
device such as the USBe Perfect. On a day to day basis, streaming MQA
from Tidal with the USBe Perfect emerges as the ultimate expression of
audio arts in this home with this system. Upgrading my analog rig to
similar spec would take a considerable investment."

Read the entire review at:

In the first review of our new USBe Perfect in they summed with:

Core Power Technologies USBe Perfect is a revelation. The improvements
are absolute. This is not snake oil audio fans, never have I heard such a
noticeable improvement in an electronic add-on device. What is
happening inside the screw-sealed metal container is a positive auditory
experience.  The semantic terms of what the USBe Perfect does may sound
cliche: removing the veil, peeling away the layers, removing the film,
washing away the haze. All of the above apply and for good reason, it
truly makes the music sound cleaner, clearer, more natural. Not only is
this diminutive wonder not leaving my system, but I’m planning on buying
a second for my other system, the USBe Perfect is absolutely worth
every penny! "

Read the entire review at:

In the new Positive Feedback review they summed with:                                                
"In closing, if like me, you are using USB to transfer digital files from
a hard drive or streamer to a DAC, consider the possibility that a
higher level of performance awaits to be unveiled with a jitter
reduction device such as the USBe Perfect. At its current introductory
price of $299, the USBe Perfect is in stiff competition with other
performance upgrades such as a fine phono cartridge, interconnect,
speaker cables, or better headphones. On a day to day basis, steaming
MQA from Tidal with the USBe Perfect emerges as the ultimate expression
of audio arts in this home with this system."
They also said: "So far, I have tried to describe how the USBe Perfect elevated already
highly engaging musical performance from ripped CDs, downloads, and
streams. I have yet to play a digital file that was not improved by the
jitter reducing qualities of the USBe Perfect, but I have only explored a
small fraction of my library. If anything, the USBe Perfect has forced
me to acknowledge the limitations of USB and led me to reconsider the
alternatives for truly transparent transfer of digital information to
the DAC.                        

Read the entire review at:                                                                                                                             

In the latest Audio Matters review they said: "Let me keep this
simple - you put it in, listen, you take it out, listen, you put it in
again. It really is that simple. Many people will likely stop there.
 Some people may even skip the 'take it out' middle step, being
convinced on first listen, but I'm an empiricist. I put the connector
between the Mac and Audient and thought, 'hum...that's better sounding'.
I gave it a few days and took it out. It did not take me a further few
days to put it back in again. I've done this a few times now, just to be
sure...and yes, I'm pretty sure. I leave it in a lot more than I take
it out. The music with the USBe Perfect in the
chain always sounds better."

Here are two user feedback's:

1- Hello Walter, Nothing short of magical in my system, very
happy to have bought the USBe perfect.

2- I am not sure what to say, so I will says lots of things.

I majored in Computer Science. I have tinkered with
electronics for the last 35 years. I have written code and built infrastructure
for large and small enterprises for 25 years.

bits are bits. Yet, yes, this thing makes those bits sound better.

I get DAC differences, output stages, all those are pretty
obvious how they affect a signal.

But, come on, we aren't talking redbook errors and
jitter...USB from bits on a storage device are bits....  I am proven wrong. This is the first time I have tried
putting anything other than a cheap USB cable in any of my digital signal

partially don't
believe it. This thing works.

My main headphone DAC is a Schiit Modi Multibit - so USB
power is not an issue, as it has (requires) it's own external wall wart. Yet,
this thing still cleans it up.

USBe Perfect is designed to minimize signal degradation effects such as
cross talk and inter-symbol interference (ISI) that limits the
interconnect distance and overall quality between two devices. See the before & after photos.

In Short – If You Are Using USB In Your System – You Want One:

o Power Regeneration BUILT IN

o Integrates seamlessly for both USB 2.0 and USB 3.0 Protocols

o Vastly lowers Jitter

The input stage of each channel offers selectable equalization
(optimization) settings that can be programmed to match loss in the
channel. We have optimized this for USB Cables of 1 to 3 meters.

Here is a quote from a customer:

"The best per dollar audio improvement investment I've ever made. The difference is scary".


Here is another really detailed review from an initial purchaser:

music lovers get drawn further and further into the ease and benefits
of streaming music vis a USB cable to either a stereo or headphones, the
need to maximize the clarity of the signal becomes, for audiophiles at
least, of paramount importance. We’ve had device created to decrease
jitter (such as the AudioQuest JitterBug) that have helped in this
regard. Core Technologies has taken their approach a few steps further.
In listing the benefits of the USBe Perfect, do keep in mind that all
USB devices draw their power from whatever source the USB device/cable
is connected to, so, as Core Technologies points out, they built the
USBe Perfect with power regeneration built in to help alleviate this
problem. It also works seamlessly with USB 2.0 and3.0. It reduces
jitter. But it also attacks the twin signal degradations of crosstalk
and ISI (inter-symbol interference) that can limit length of the USB
cable. Having owned and used the JitterBug to good effect in my systems
(both two channel and headphone), I was eager to hear what the
(admittedly) bigger and more expensive USBe Perfect could do to the
sound of the music I was listening too".

using a MacBook Pro as a streamer. It’s SSD hard drive contain many of
my favorite jazz CD’s. I also use it to stream Tidal MQA. I use
Audirvana to handle which music I chose to listen to. I run an
AudioQuest Coffee USB cable to the USB input on my Oppo HA-1 headphone
amp, or via the Coffee USB to an AudioQuest Red DAC to render Tidal. For
headphones, I have Audeze LCD-2C, LCD-1, Focal Elear,
AudioQuest Night Hawks and Night Owls, and AKG-701. My main stereo uses
the same feed, but to a Jeff Rowland Design Group Continuum S2
integrated amp and Magneplaner 1,7i speakers. Most of my listening was
done via headphones, with the LCD-2C’s or Focal Elear being the primary
devices. But know that what I’ve written below applies equally to
playing my music back through my main stereo."

USBe Perfect is about two and a half time the height of
the JitterBug and a little wider. Like the JitterBug, the USBe Perfect
has a female USB output on one end, and a male USB input on the other. I
took a fair amount of time to compare both, which simply consisted of
me listening to a track, then swapping out the devices one for the other
and relistening again. The effects were not subtle."

began listening to Rodrigo Y Gabriela’s self-titled album and their
version of “Stairway To Heaven.” These two musicians play two acoustic
guitars, and with the JitterBug in the chain, the sound was highly
enjoyable. But substituting the USBe Perfect for the JitterBug allowed
thing to really open up sonically. Suddenly I could not only hear the
two guitars playing more clearly in their own acoustic space. Plus, I
had a better sense of fingers on strings, and how they excited the
cavity of the acoustic guitars. It was an eye (ear) opening experience."

USBe Perfect seemed to be equally effective on Tidal MQA tracks as it
was on 16/44. When I pulled up Eric Dolphy’s “Out To Lunch” in MQA,
again the differences were not hard to hear. Dolphy sounded far more
like he was in the room with me when the USBe Perfect was in line. The
bass was more present, more woody sounding, and far more defined. And
dear lord, what the USBe Perfect did for Bobby Hutcherson’s vibes. They
rang with a clarity I’ve seldom heard from streaming music."

up Cannonball Adderley’s tune “One For Daddy O”, at the very end of the
tune you hear Miles Davis say, “Is that what you wanted Rudy?” With
the JitterBug in line, it sounded fine, exactly like I’ve heard it at
it’s best. But substituting the USBe Perfect suddenly made the sound of
Rudy’s studio that music clearer. I felt more like I was at the

example of what the USBe Perfect brought to the table was when I lined
up the soundtrack to the movie “Across The Universe” and the song “Let
It Be.” On the soundtrack, it’s sung as a gospel tune, with full choir.
With the JitterBug, I got the sense of singer and choir quite clearly.
With the USBe Perfect installed, I suddenly heard the singer clearly
standing well in front of the choir, and I could better make out
individual voices of the choir. Plus, I got a better sense of space."

I pulled up Marcus Miller’s version of the Billy Cobham tune “Red
Baron.” With the USBe Perfect, I heard more of the purr of Miller’s
electric bass. And that bass was a cleaner, clearer, more realistic
instrument, and with plenty of added texture to each note."

going back and forth between the AudioQuest Jitterbug and the Core
Technologies USBe Perfect, it was easy to reach a conclusion that from
this point on, for all my streaming or USB audio needs, the USBe Perfect
has simply got to be in the chain if I want to hear the music I’m
listening to at its best. To quote that old audiophile analogy, its as
if the USBe Perfect wiped a layer or three of haze from the window that
separated me from the live musical events. The USBe Perfect comes far
closer to living up to its name (perfect) than anything I’ve heard in my
system to date. Congratulations are in order to the good folks at Core
Technologies for realizing worked needed to be done to make USB
listening a pleasurable pursuit, and created the USBe Perfect to move us
further on down the road toward that ever elusive goal of recreating
the live event in our listening rooms. While the Jitterbug is good at
what it does, the USBe Perfect moves us that much closer to the endzone.
If you’re a streamer, you really need to hear what the USBe Perfect can
do for your listening time."

Regular Pricing:

$499.00 with no USB cable (One is required) On sale now for $279.00

$599.00 with a $199.00 1m Silver USB cable-Intro sale $399.00     
$799.00 with a 1m $499.00 Diamond USB cable-Intro sale $449.00  

2 year warranty

We accept PayPal, Visa, AMEX, Discover, MasterCard, bank wires & money orders. 

Read our over 13,600 points of AudiogoN #1 rated feedback and then call 770-667-5633 with questions or to order this excellent accessory. 
GA & HI residents add sales tax.

International sales are paid by PayPal or bank wire transfer only.

Brands carried: Ampsandsound tube electronics, Audio Alchemy, Audio GD electronics, Audio GE Teddy speakers, Black Ice Audio tube electronics,
Bluesound music streamers & servers, Bob Carver tube amps, Burson Audio, Core Power Technologies
A/V line conditioners and cables, DSPeaker room correction, EARMEN portable electronics, EAT Turntables, Emerald
Physics speakers & amplifiers, Focal headphones, HifiMan headphones, Iso-Acoustics, LSA speakers, electronics,
turntables & headphones, Marantz Reference, Martin Logan speakers & subwoofers, Mofi electronics, Musical
Fidelity, Music Hall, Ortofon cartridges, Peachtree Audio,
Project turntables, Pure Audio Labs DAC's, Quad, Raal headphones, Silverline Audio speakers, SPL electronics, Sumiko cartridges, Sweet Vinyl pop
& click filters, Wireworld,
Wywires, Zesto Audio tube electronics

Sales policies on the Underwood Hifi Inc. website at


member since July 2000

Underwood Hifi, Inc.  Verified Dealer

Last 12 months
Items from this seller