ASi Teknologies
"High Performance A/V Modifications & Products"
Contact:

Douglas Jesse
11845 Highland Drive
Warren, Michigan 48089
586-944-5611
asi_tek@yahoo.com
Request More Information about our Marantz mods and any special request!
Use this form to contact us to get more information regarding
our mods and any special requests or price quotes. You can
also use this form to order by sending us a message to get in
touch with you.  We take all forms of payments.
Your name:
Your email address:
Your phone number:
(Optional)
Inquiry:
Full Modification Descriptions

-Power Supply upgrades/rebuild
Replace stock diodes with handmade ultra fast ASi versions, (removes grain and grit and
improves speed), Replace stock electrolytic capacitors with ultra fast, ultra low impedance
Rubycon caps (more speed, better bass, better control, better resolution), replace internal
wiring with silver wiring. Replace stock IEC with 3prong IEC that is cryogenic treated.

DEXA Clock Reference Clock Upgrade-
Replace stock clock oscillator that feeds the critical DSP circuits to the new ultra low jitter DEXA
clock. This lowers the phase noise (jitter) to ultra low levels and allows the unit to perform to
much higher standards, retrieving more information off the disc. More detail, better focus, better
bass, voices and instrument locations and overall resolution is the improvements in this critical
mod upgrade.

Analog Output Stage Rebuild w/Audio transformers & Part Replacements
This is the most critical of all the modifications that are performed in this machine. The stock
output stage is chalk full of signal resistors, transistors, etc.. We completely remove this output
stage and rebuild it with a optimal sounding output stage consisting of Signal coupling
transformers. This is the largest improvement that can be done in the entire unit. The very high
quality transformers provide galvanic isolation in the signal path (which blocks HF noise being
generated by other component down the signal chain) and gives a means of providing a ultra
simple, no-capacitor-in-the-signal-path type output that is sure to stun and please you to say
the least. In this mod as well, we replace an abundance of voltage rail capacitors for the DAC
chip area to the ultra fast Rubycon capacitors, and all wiring is Silver Wire. Now this player can
outperform expensive flagship type units on the market for a fraction of the cost! Now Music is
so much quieter, cleaner, clearer, more vivid,more resolute with no lack of dynamics! Much
more music, emotion, and drive over stock.
Budget Modification $795 Installed/Shipped
Send your player in for mods
7 day turnaround
Full Modification $1395 Installed/Shipped
Send your player in for mods, 10 day turnaround
Marantz DV-8400 Modification Descriptions & Prices
We Ship
World Wide!
Budget Modification Descriptions

-Power Supply upgrades/rebuild
Replace stock rectifier diodes with handmade ultra low impedance custom ASi versions,
(removes grain and grit and improves speed), Replace main SMPS filter cap with a over sized
low impedance capacitor for more power storage and much better filtering (improves bass,
speed and overall resolution). Replace stock electrolytic capacitors with ultra fast, ultra low
impedance Rubycon caps (more speed, better bass, better control, better resolution), replace
internal AC high voltage input wiring with silver wiring. Replace stock IEC with 3prong IEC that
is cryogenic treated.

DEXA Clock Reference Clock Upgrade-
Replace stock clock oscillator that feeds the critical DSP circuits to the new ultra low jitter
DEXA clock. This lowers the phase noise (jitter) to ultra low levels (under 2 picoseconds RMS
!!!!) and allows the unit to perform to much higher standards, accurately retrieving more
information off the disc. More detail, better focus, better bass, voices and instrument locations
and overall resolution is the improvements in this critical mod upgrade.

Analog Output Stage Parts Upgrades-
Replace stock I/V converters and interstage opamps with the best sounding ones on the
market made by national semiconductor for much cleaner, more resolute and dynamic
performance. Replace all voltage rail decoupling caps with ultra low impedance Rubycon
capacitors. Add set of very high quality Vampire RCA jacks to rear and wire in with silver wire.