Anyone have Spec's for a 1970's "Kustom X" Rackmount Stereo Power Amp?

Found a nice one to use as a studio amp, but can't find anything at all with online searches. My repair guy says it tests to be 125w/channel at 4 ohms; about 80w/channel at 8 ohms. But I'd like to know more.

Anybody know this amp?

Rich Smith