I’ve owned several ARC power amps Classic 120 monos were awesome except when they blew a tube.
My recommendation is the Ayon Spirit V I had the Spirit lll the Ayon amps are exceptionally well made. Auto bias, beautiful looking, top notch parts. Excellent protection circuitry. Not sure how much power you need. If you need more the Ayon Triton is a 120wpc in pentode and 70wpc in triode, it’s a beast!