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) & 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 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. 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 are closed until Dec 7th 2016
"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 400+ 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 (Sept 2016 Update):
We have been receiving a good amount of equipment in for repair (modified by others) over the
past 6 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
timeperiod, cleaner and clearer, better speed. Heat, humidity and moisture shorten shelf life. If
youown 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 Dec 2016:
~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
Updated Dec 2016
~2 New Oppo UHD BD players coming very soon
Oppo will be releasing TWO UHD players in the next 2 months. The first to be released is
the replacement for the BDP-103 (HDMI transport) and then shortly after in early 2017 the
UHD replacement for the full size, all options BDP-105D will be released.
We will be providing full audio modification rebuilds, ASi OTM battery supply upgrade and
New Modified Oppo UHD BD players this year as soon as the new Oppo player is released.
Remember no one else on earth performs as such exotic and high end mods to your oppo.
Everyone elses approach sounds bland and bottlenecked. If your interested in getting a
modified Oppo UHD Blu-Ray Player (HDMI transport or full blown unit) with best sounding
modifications in the world, please email us here to get on the list.
The new Oppo UHD mods are going to be the same or very similar to BDP-105D mods.
We will have multiple production runs going when the players are released, we already have
a good number of signups, the process is first come, first serve, however we will try our best
to accommodate everyone with the best turnaround and customer service.
(After you hit "Submit", this page will refresh)
We specialize in battery powering oppo players!
Best sounding modified Oppo players in the world!
Updated Dec 2016
Coming Very Soon! Brand New
Gustard A20H Statement
Modifications and options,
ASi OTM Battery power! No Mains!
We can fully modify & battery power the A20H away from the
dirty AC mains for best possible performance.
ONLY way to fully experience DSD the proper way is by
removing the whole AC mains and power supply!
Hottest DAC on the market!
I2S input capable of DSD512!