I bought a VS115 brand new from my local AR dealer. Within the first week, a resistor blew up, probably the same as Bifwynne referred to in the note above. I think this isn't acceptable and the AR engineers should figure out a fix and make it free to VS115 owners. When it happened, it scared the crap out of me because the resistor made a loud pop and I later found the blown resistor on the shelf below the amp. I returned the VS115 that same week for full credit towards my current McIntosh MC452 SS power amp and I'm happy. The experience was great since my dealer, Paragon Sight and Sound in Ann Arbor, MI took care of me.