an a/d/s 625x 6 channel amp.

Unless a/d/s has changed their nomenclature, you have a six channel amplifier, 25 watts per channel, 150 watts total. This is NOT a model that is currently in production, thus your difficulty with finding any information.

a/d/s is considered to be pretty high-end, and if you got yours for $109 (and it works OK) you have gotten a real bargain.

All of the amps and speakers in the new system I am putting into my ShoWagon will be a/d/s.

tanstaafl.