Rok, SS Amps go downhill, CD players function on chips; either they're working or their not. Give those dinosaur amps to the goodwill.
https://www.parts-express.com/cat/home-audio-amplifiers/106
I've had 3 of these, they sound very good with a tube pre. The first one I bought cost $139. now they're a little higher. They have one downside, air vents are on the top of the amp, and if one drop of water falls on top, you got a smoked amp. Been there done that, no water gets within 100 yards of my amps.
https://www.parts-express.com/dayton-audio-apa150-150w-power-amplifier--300-812
If you want to be in the big league, or at least knocking on the door, you have to have a "tube Preamp" they last a long time.
Happy shopping.