When my Rotel rb1090 failed, I was given 2 amps , 1 per week, on my choice, and the approval of my dealer, known them for years.
First was the Sunfire regular 300WPC amp, loved her, power seemed unlimited, with the great voltage or current speaker taps, one sounded like SS, other through a 1 ohm thingy to sound like a tube amp, great amp! (I now own the Sunfire Sig 600) love her.
2nd week conrad Johnson MF-200, aging but upgraded by factory,
loved this amp, not quite the power of the Sunfire, but very, very smooth sounding, I almost bought this amp, but, her age kept me from buying.
I loved this amp, warm, rich, detailed, some might say it’s slow,....
naahh, very nice sound, relaxed, and accurate.
If you locate the 350 CJ amp, drive it to CJ, for a look-C, upgrade, test, replace parts as needed.
I’m still looking for one in MY PRICE RANGE. not yet, soon, I’ll find one.