Kenwood KA-601 High Speed DC Integrated Amplifier 

I do like . I still have a Kenwood KA 3300. I bought new from Albert's Hi Fi Perth Western Australia. Sadly Albert's now only do car stereo , no longer HiFi.

These are great. I have the KA-801 and the power toggle broke too 😒

Oh man, had one of these a loooong time ago. Was part of my first attempt at a nice system. Sounded so good with DCM time windows. It stopped working - maybe the relay? Or simply might have been a fuse. So I gave it away. I don’t know what I was thinking.

That's a real beauty! Love all of the inputs and controls.