KOCH ATR-4502 poweramp - *WITHDRAWN* £350 Bingley

[sifi2112]

Withdrawn - KOCH ATR-4502 2x45w / 90w bridged @ 8 Ohm .. great quality amps these made by valve amp specialist Koch in Holland.

It’s loud !

Weighs 5.5kg in a 1U rack format.

ATR stands for Authentic Tube Response, each channel has a preamp tube. 
Frequency response is from 40Hz to 20k I believe, I know this is a guitar amp but I used it for bass, no problem.

Jack out speaker connectors that also doesn’t need to change for bridged mode.

2 speed thermo controlled fans.

Koch told me they are discontinuing these.

 

Only selling as I’m kinda retired from gigging … more pics to follow 

https://www.koch-amps.com/guitar-poweramp-atr-4502.html

 

https://www.koch-amps.com/uploads/2/4/0/4/24048927/atr4502_manual.pdf

Edited August 2, 2023 by sifi2112