Thank you for visiting ASi! Your best source for audio circuit modification rebuilds & upgrades in
the entire world. We offer our own innovative creations (ie: ASi OTM low impedance battery
supply & ASi NLR SuperServer) & audio system solutions that are not found anywhere else in the
high end audio industry. We only use select best sounding & most technologically advanced parts
on the market in our modifications to give you the best sonic performance possible. If your
looking for a modest budget upgrade to your Hi-Fi or car audio gear to make it sound cleaner and
more open, or if your looking for a no-holds-barred top end "World Class Reference" audio
modification rebuild that will blow the doors off of anything, regardless of price, then your at your
final destination. No Limits! We specialize in the modification and circuit rebuild most
components in your audio system including speakers. We can also recap or handcraft new
speaker crossovers with top end parts & provide cryo treated silver wire cabling to outfit your
entire system. The modifications listed on this website is our most popular purchased
modifications but we will work on anything with similar custom modification approach. Please
send any custom modification inquiries to our email or to the form on the bottom of this page.
There are plenty of pictures of our work on this site & we can provide further pictures, email or
phone references if necessary. We take pictures of all work done & send to your email before
shipment. We also provide a full detailed parts list so you see everything that was listed is
installed in the pictures.
"Ultra High Performance Hi-Fi Audio Modifications & New Innovative Audio System Solutions"
#1 World Wide Source for Ultra High Performance Hi-Fi Audio Modifications & Rebuilds
~We will work on virtually everything! Need a custom mod done?
We have modified over 500+ different types and brands of CD/DVD/SACD
players & Transports, DAC's, Processors, Integrated/Amplifiers. We have
also modified and tweaked out speakers from bookshelf to large towers
and can make you custom high end crossovers for a total sound
transformation. We use only the finest sounding parts that we have tested
to ensure the highest performance possible!
World Wide Shipping
We offer the worlds most
rebuild for the $8,995 Cary
SLP-05 Preamp to elevate
your audio above everything
else on the market!
improvements over stock!
World Reference sound!
Our Modifications and
optional ASi "NO LIMITS"
DAC stage upgrade to
vastly improve your
We do repairs to both
stock and previously
Please contact us for
~Blackgate Capacitors Failure Announcement (July 2018 Update):
We have been receiving a good amount of equipment in for repair (modified by others) over the past 8
years that has become suddenly defective for the customer (output channels failing, no sound, power
supply failures, disc reading issues, etc). We have been discovering internally shorted out blackgate
capacitors installed previously that are prematurely failing or failing due to heat. Blackgate capacitors
have a 85 degree temperature rating celcius (which is 20 degree below normal high performance
marketed caps... ) and in tube gear or similar that generate heat in the local area could lessen the life
of locally installed blackgates. Heat is the biggest culprit of component failure. The
Rubycons/Panasonics replacements are all rated at 105 degrees Celcius and have much longer
longevity, have lower internal impedance and sound better for a longer time period, cleaner and
clearer, better speed. Heat, humidity and moisture shorten shelf life. If you own any equipment
modified with blackgates, please keep this in mind.
If your interested in finding out more information, please email us here.
The ASi OTM (Off The
Mains) Battery Supply can
be retrofitted with any CD
Audio, DAC's, processors
to power the critical DSP,
DAC, Clocking, & Analog
output stages off the AC
mains for the best
performance. Step up to
the big leagues with low
impedance ASi OTM
If your not on OTM , your
not hearing everything!
ASi News & latest updates section Oct 2018:
~Now accepting custom modification requests
Please email what you have for custom modification pricing
quotation or please send information to the form below. We can
supply MANY pictures of past projects.
~We can repair & mod update all defunct audio modifiers gear
If you have something that is modified and/or not working
anymore we can fix & make sound better as we know and
understand all other forms of modification techniques,
approaches and can quickly troubleshoot your gear.
Please use this form for modification inquires, questions and orders
~ASi No Limits Dual Mono Amplifier- WORLD'S BEST 2ch Dual
Mono Amplifier! Based off the worlds best amplifier modules, the
brand new 700wpc NewClassD NCDV2 SILVER PLATED PCB
modules. We will offer a 4 chassis and 6 chassis design with
optional isolation transformers, per channel.
~Dexa Neutron Star 2 Flagship Clock: Brand new top of the line
flagship clock, 40% better than original NS clock! Our version is
tweaked out/modded with Audio Magic Ultimate black out paint and
C37 Gold Standard exotic resonance lacquer for the best
~Bybee iQSE/QSE- Quantum Signal Enhancers- These
electromagnetic reducing panels really improve the spatiality,
separation, bass and treble properties when mounted inside your
component, near transformers or used around cables. They also
work great as room treatment, you can mount over 10 iqse panels
in your room with mindblowing results, we can offer 10+ discount
pricing. We offer C37 treated versions. Please inquire.
~Audio Magic Ultimate SHD Beeswax Fuse Top of the Line fuses
NOW AVAILABLE. We have tested ALL the top fuses on the market
and the Ultimate SHD is by far "The Best" sounding, most organic and
natural fuses we have ever heard, as close to fuse bypass as you are
going to get. We sell them (tweaked) for $225. We are creating a new
webpage for these so please email until then.
~Audio Magic Ultimate Black Out Paint applications- We are now
performing Audio Magic Ultimate Black Out RFI/Resonance control
applications to ALL modified parts and parts in modded circuits. Please
email for more info. Nothing like this exotic shielding paint in the world!
(After you hit "Submit", this page will refresh)
We specialize in battery powering oppo players!
Best sounding modified Oppo players in the world!
Lots of people are still modifying this excellent player!
We will be completely rebuilding the brand new $1699 Matrix X-Sabre Pro DSD1024 DAC with
the worlds best audio modifications possible. This DAC offers more input capability than any other
dac on the market regardless of price (with 16x DSD (DSD1024) input on I2s and DSD dop/dcs on
coax/toslink/aesbeu/usb! It also uses the brand new ESS9038PRO Flagship DAC chip, and has built
in 18DB preamp. We will offer a Statement Level and a No Limits Level for the person who wants to
fully experience DSD1024 using mostly low impedance battery power and ultra low noise
regulation on all processing circuitry, extremely critical for best possible sound!!! We will
also be using a new DSD1024 interface circuit board with the Matrix pro to allow DSD1024
connection via USB to your VERY HIGH PERFORMANCE audio computer server. We will be
producing a super high end world reference class audio computer server and it's going to be called
the new ASi NLR ("No Limits Ripping Machine"), which will be designed to completely outperform
ALL custom built computer servers that exist in the market. If your looking for the BEST audio
server possible for your very critical DSD1024 files, the best and only solution will be the ASi NLR!
New Matrix Audio X-Sabre Pro
PCM768/DSD1024 DAC Modifications!
Experience the superiority of DSD1024!
HOT!!! LAST BATCH MOD SALE! Oppo UDP-205 modifications
Now available! The worlds most sophisticated & best sounding/performing
Oppo UDP-205 modification rebuilds & upgrade options. LAST BATCH MOD
Super SALE! 10-4-2018 UPDATE: Oppo is now sold out of their last batch
UDP-205 players, send yours in today for mods as our list is filling up fast!
~R.I.P. Garth Rowley 1956-2018
We unfortunately lost a great friend, a great person and a long time
ASi mod customer this year. He used to visit this website often. We
offer our fullest condolences to his family on his sudden passing...
cd player modifications, cdp mods, audio upgrades, cambridge audio mods, esoteric audio mods, oppo mods, audio modifications, oppo uhd bd player, oppo udp-203, oppo udp-205, UDP-205 mods, metronome audio, crossover upgrades, DSD512, DSD1024, Matrix X-Sabre Pro, DSD1024
DAC, Denafrips, denafrips terminator DAC, Audiophile, Linn, Grado, Naim, Pass Labs, Kronos, Kubala, Dan D'Agostino, Transparent, Musical Fidelity, Magico, AudioQuest, Audio Research,Shunyata, Threshold, Acurus, Forte, Bryston, Mark Rowland, Yamaha, Luxman, Mcintosh,
Magnepan, Apogee, Acoustat, Martin Logan, Perreaux Accuphase Altec JBL Bang Olufsen Kenwood Sansui electrovoice, audiophile, stereo, hi fi, hivi, home theater, cerwin vega, klipsh, sony, bowers wilkens, infinity, vifa, pioneer, jvc, audax, kenwwod, marantz, denon, clarion, television, tv,
ht, kef, epos, thorens, dynaco, krell, wharfdale, paradigm, bose, rotel, adcom, nad, sonance, jl, jbl, yamaha, vienna acoutics, acoustic, sub woofer, goldwood, phillips, matrix, mtx, focal, velodyne, harmon kardon, niles, teac, crown, mcintosh, technics, luxman, sansui, cary, anthem, onkyo,
advent, mirage, boston, adc, theil, altec, tannoy, monster, dcm, polk, von schweikert, klh, energy, jvc, anthony gallos, russound, toa, definitive, kinetic, hafler, yorkville, olin ross, nht, bang olufsen, cambridge soundworks, legacy, fluance, sequerra, conrad johnson sonographe, lowthers, HSU
research, silverline audio, orb, audio note, epic, martin logan, axiom, tekton, moitor, mb quart, vandersteen, carver, amp, amplifier, receiver, Marantz svs hsu aperion axiom oppo outlaw emotiva optoma denon buttkicker Audiophile Power Sound Audio Revel paradign bryston McIntosh TCS
PBS rythmik reaction audio usher snell jamo parasound pre preamp pre-amplifier amplifier speakers audiophile videophile interconnects audioquest kimber