Welcome to USAudioMart, a classifieds site for used audio and hifi. Postings are free for hobbyists. Register today and start selling/buying audio gear!

> Classifieds > > > Acoustat Servo Amps, Heavily Modified and Upgraded

OFF - BEST OFFER FOR: Acoustat Servo Amps, Heavily Modified and Upgraded

Item #649417711
Info: Acoustat Servo Amps, Heavily Modified and Upgraded

Asking Price:
USD $3700.00
Payment method: Cash, Paypal
Condition: 5 - Average (?)
Date Posted: Feb 24, 18 7:12pm (PST)
Edited: Feb 25, 18 3:19pm
About Seller: OH, United States
External Feedback: ehous (540)
Days in System:180

The feedback period is over for this ad, so feedback is no longer allowed. For details please read this FAQ entry.
Share |


Sponsored post - log in to remove this ad.
** This Ad is Marked as OFF by seller and cannot be responded to. **

Acoustat Servo Amps Heavily Modified and updated.
The sound is excellent, Selling because I have finshed them and want to move on to next project.

Reasonable offers will be considered

These have been in use consistently since 2006 with many panel configurations.

Stable modern T1 Transformers and three spares
Modern Diodes in the rectifier
Film caps in the rectifier, 150v circuit, and output
Completely replaced all components on the boards except the relay socket.
Modified the quad op anp circuit to be dual op amp and includes and opa627
Modified 18 volt circuit to include +/- regulators.
Fixed resistors in the high frequency and gain stage, includes variable rotorary switches
Cones for feet
Maple butcher block platforms
12v trigger for remote turn on with remote control and long wires for trigger
Manual switch for turn on
Bypass onboard RCA input for external low voltage XLR audio preamp stage
External low voltage audio preamp stage BALANCED XLR
BALANCED XLR circuit to reduce noise and improve sound quality
Includes one pair of teflon silver XLR cables for Input stage
Three boxes of 6GE5 tubes guessing approximately 150, will count if a serious buyer inquires.
One high voltage probe, Fluke 6KV
Original high voltage caps
One parts bin full of extra components
One custom repair stand to allow amps to be rotated for accessing bottoms of boards
One pair of 50" custom triple plugs for connecting panals to amps
One pair of input boxes for panels.

One Binder of detailed info on builds (can also include USB stick of info)

Pick up in person preferred, I cant imagine the effort and cost to pack ship everything included. Purchaser is to understand what they are purchasing and this is an as is sale with no warranty or returns due to age, complexity, high voltages (over 5000 volts when in operation)


Amps, external pre-amp, remote control and trigger wires, spare parts, a lot of spare tubes, repair stand, XLR cables, Binder, and maple amp stands

US Audio Mart is FREE!