Audio Research Refernce 75se

Probably why the party in question wants to sell it. ARC is subject to as many problems as any other brand but cost x times more to repair.  No practical experience, just my impression to what is written here.  

Next someone who has had no problems will chime in and say otherwise, and that's ok.

@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.

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

But be careful.