Audio research VSi75 -why so many for sale?


I've been considering getting an Audio Research  Vsi 75 for some time but have hesitated. Now there are quite a few for sale ( 5 on Agon and more on ebay and other sites) at about 50% of RRP.  Is there something going on I should know about before making an offer? Is AR about to phase them out, or are they developing problems??
rrm
+1, ebm. 

However, it does gives you the advantage to negotiate and cherry pick the best from the lot 😉

Go for it!
ARC is moving their product line toward the autobias circuit seen in the Foundation series. No idea if they will be introducing a VSI-80SE but its probably a safe bet. Its a great amp though.