Audiophonics SA-3180 Service Manual?
 

I need a service manual, or at least a schematic, for Audiophonics'
old SA-3180 integrated amplifier. I've exhausted all the sources I
could think of, including eBay and other online manual sellers. The
manufacturer appears to still exist, but denies all knowledge of
products previous to their current car stereo offerings. Any
assistance would be most welcome...