from ARC to Pass ?

My friend went from same ARC pre to Pass X2 then Pass XP-10, with significant improvement each time...amp was Pass X250.5

since neither Pass model is current, you should get a good price, and Pass tends to be an easy resale if you don't like it...   the Pass was much better in my opinion also, in a system I was very familiar with...in fact my friend purchased the ARC from me