Audio Research Refernce 75se

I own that amp.  Agree with others; there shouldn’t be a buzz/hum.  I’ve had issues with other ARC amps, and it was miserable.  (Brand new 160S that had to get a new PCB after a few months, which took several months).  FWIW, I also ran it with Treo CTs for a few months.  To each his own, YMMV, and all that, but I did not think the REF 75 was enough for those speakers.  They sounded dramatically better — liberated — with the 160S.  Until it broke.  

@mike30 The best advice given so far was from @ghasley 

 If you are dead set on that direction, you might reach out to Paragon as they likely have some ref75se’s new in box for a little more than you are looking at preowned. It would have a warranty and it is an end game amp.

@jetter

I wish I could.

I’m not from the US and I’m limited.

talked to the owner of the Ref75 se he connected it for 5 hours in seperate place and he said there was 0 noise after 4-5 hours of running. anyway im taking it for a verfied ARC mechanic to check it out. then im gonna do a sound test compare to the VX-5 twenty and choose 1 :D

@mike30 It sounds like you have your bases covered. Have fun!

But be careful.

Ask seller if it possible to look inside…so you could figure out where the buzzing comes from….  buzzing could come from one of the warming up tubes… if so that is not a problem at all.