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ASi Audio Modifications Contact & Shipping information:

  • We are located in north suburban Detroit, Michigan,

  • Please Email Here or call us direct (1-586-944-5611) to trade
    shipping address information when you are ready to place your

  • Pictures are taken of all work done and sent to your email
    BEFORE we ship out so you can see everything that was done
    and ordered so it matches the bill of materials and scope of

  • We ship World Wide direct to your country via USPS Priority or
    Express, most equipment arrives in 1 week. For USA, we ship
    Fedex home delivery or Ground.  For Canada, we only ship
    USPS Priority/Express because of past issues w/UPS/Fedex's

  • We can do local meetups (or out of state trips by appointment),
    system rebuilds/tuneups or such by appointment, we do this all
    the time, please email to inquire.

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ASi Teknologies
"Ultra High Performance Hi-Fi Modifications & Products"
We are located in suburban Detroit, Michigan USA, about
1/2 hour from Canada. Please call or
email for shipping
Our room at AKFEST 2008, World premier of the ASi Digital
System 1 (100% digital system). Fully modified Oppo
DV-980H feeding DSD via DH Labs Silver HDMI into
Panasonic SA-XR57 100% digital AV receiver fully modified,
including modified Silverline Audio Prelude speakers and ASi
Silver speaker wiring. ASi DPS (Digital Power Station)
prototype in the background was powering the whole system,

NOTE: This was the first time HDMI cable was ever used at a
Hi-Fi audio show to trasmit audio, the next people who did it
was PS Audio with their perfectwave transport/dac system.
Our room at AKFEST 2009, (Lots of different speakers to use).We
were showing fully modified Wadia 170i with ASi OTM battery
supply (100% battery powered) and a partially battery powered
Panasonic XR-55 AV receiver.
Email contact:

Various pictures of our modifications, crossover
mods, and custom services found no where else
This is our fully modified Oppo BDP-105D with all mod
options. NoticeEMI/RFI shielding on the power
transformer,power supplycover,transport lid, etc. Notice
all the other mods and wiring done as well throughout the
whole unit.
We can make you a custom fully modified, battery powered No Limits Behringer made in
a custom shielded enclosure. The ASi OTM battery supply also lives inside along with
the charging networks.
ASi is the only company to take the Behringer DCX2496 to these extreme limits of audio
reproduction. This custom battery powered processor outperforms ANYTHING else out there!
Wadia 170i custom modified along with ASi
OTM battery supply. This wadia is 100%
battery powered! Best sound possible!
100% battery powered fully modified Marantz
SA-11S1 This is a full monty mod design using
(2) ASi OTM's to properly battery power the
ENTIRE modified marantz unit! This is an
example of one of the best sounding SACD/CD
players in the world! This player need no AC and
sounds out of this world!
ASi OTM (Off The Mains) Low Impedance Battery
supply, can be retrofitted into most digital front
end gear to remove the AC mains, this is better
than any switching/ linear power supply upgrades.

~Power cord for internal charging
~Digital timer
~30"  DC Umbilical Power cable w/Neutrik
~Optional 220v to 115v converter for world wide
Rear shot of ASi OTMshowing the
Multi-Pin Battery connector, Heavy Duty
ON/OFF switch and IEC for internal AC
battery chargers.
The ASi OTM low impedance battery
supply is available in Black or Gold
EMI/RFI reduction aluminum chassis.
This is our Statement rebuild to the Cary SLP-05 Preamp.
DRASTIC transformation over the stock SLP-05!  Check out
the thick power wiring, the point to point hard soldered
silver wiring/cotton tubing,V-Cap CuTF capacitors (tweaked
with C37 GS lacquer and RFIshielding), Bybee Music Rails,
Front volume control bypass. Cleanest/clearest preamp we
have ever heard.
Dexa Neutron Star Flagship clock used in the
Statement Modification Rebuild for Oppo BDP-103/D
and 105/D
Custom made high end crossover upgrades for the
Emerald Physics CS-3 open baffle speaker system.
These were made using Mundorf Mcoil flat inductors,
V-CAP capacitors, DuelandCAST resistors Eichmann
cablepods, and hardwired 99.999% silver wiring (cryo
treated) w/natural unbleached cottontubing for the
customer to solder at the speaker drivers.
Custom made high end crossovers with black wooden
boxes for another set of Emerald Physics CS-3 speaker
system. Munforf Mcoils, Vcaps, Dueland CAST resistors
and captive cryo treated silver speaker wiring coming
in and out of crossover boxes (top lids not shown in pic)
Magnepan 1.7R crossover upgrade using
VCAP OIMP and CuTF capacitors. The
inductors are Mundorf Mcoils and cryo
treated silver wiring going back to
through the panel to the terminals. There
was also Hi-Fi tuning Supremefuses
used on the tweeter section. This made
such a major sonic transformation.
Here is a huge crossover rebuild for a
set of Snell Tower speakers. There
were Clarity Caps, Mundorf M-Resist
resistors and a HUGE Munford M-coil
inductor upgrade for the bass drivers.
This is a picture of our fully modified Wadia 170i
w/ASi NoLimits DAC stage and high end audio
signal coupling transformers. You can also see
the Dexa Neutron Star flagship clock, Dexa UWB
low noise voltage regulators and multiple Bybee
Music rails and quantum filters used.
This custom modified fully modified Marantz SA-11S1
that is 100% battery powered! It uses two separate
external low impedance ASi OTM battery supplies, here
you can see the battery input voltages spreading out
throughout the player going into the Bybee Music Rails.
Notice all  power wiring in this mod is completely
Here is our Statement Modification done to the
flagship Wadia S7i CD player.  Please see the
EMI/RFI shielding tape on the power wiring, top of CD
transport, side walls of chassis and various other
places. There is various Bybee Music Rails installed,
analog output rebuild w/high end audiosignal
coupling transformers. Dexa Neutrino clock installed.
Many capacitors were upgraded with Rubycon ZL ultra
low impedance capacitors.
This is our Statement Modification done to the Esoteric
UX-1 Limited. The whole power supply was modified,
ASi OTM low impedance battery supply, 4 Bybee Music
Rails added, Dexa Neutron Star clock, Dexa UWB low
noise regulators, analog output stage rebuild with Dexa
Discrete opamps and high end audio signal coupling
transformers sending the signals 100% true dual
differential balanced XLR! Incredible sounding player.
Our room at AKFEST 2010, showing fully modified Oppo
BDP-83SE with ASi OTM Low Impedance battery supply
running majority of the Oppo BDP-83SE on tuned low
impedance batteries instead of the dirty AC mains.
We do on-site upgrades and modifications. Here is a
fully rebuilt
Emerald Physics CS3 system. Upgraded
Beyma replacement speaker drivers, handmade high
end external CS3 crossover (in custom EMI/RFI
reduction chassis), Statement modified Behringer
DCX2496 , custom silver wiring.   These speakers
sound better than $100K speakers we have heard,
this system sounds truly World Class Reference!