I have a panasonic SA-H80 I am finding little information on it, in fact all I can find is info on the SG-H10...and that's still not much info.

The sticker on the back says;

Tuner Deck Control Amplifier

Model SA-H80

Here's some pics of it;

I've found some repair manuals for the SG-H10, anyone know what the differences between those may be?

I have the power amp that matches up with this pre-amp. It plugs right into it. Interested? I'd take $25 + shipping for it. Can't test(cuz I don't have the tuner amp) but it does power on.