It's a mint old school SR-82 with barely a surround processor to be found yet it handles 5 channels. Can't be too many of these around. Think it's from 1992 but not sure but it's made in Japan so thats a good thing.
The sound is very musical (bought it for music mainly) and the power is endless. Damn thing even has a decent phono section. Built like a tank but the heatsinks are on the cheap side. $50 and I'm good to go.