I'd be interested to see whether more people have tried Krell. I don't have ARC gear myself but I witnessed a presentation that went slightly amiss and I have been wondering why that should have been the case. In this particular instance, a Krell Evo 402 substituted the originally programmed ARC REF 110 amp to accompany the ARC REF 3, as the organizer considered the ARC not powerful enough to fill a large acoustically damped hotel conference room with a few dozen people in it. When the music got loud (as in very LOUD!), I noticed what seemed like distortion. Speakers were the new Sonus Faber Amati Anniversario (rest of the system, see thread: World of Hifi in Wiesbaden). So I wonder, don't ARC and Krell "like" each other electrically?