Mert, it sure makes sense, since you have obviously been carefully designing and matching your "chain" from wall outlet to speakers. At the presentation, I had heard what seemed an unfortunate mix of gear and I wondered are there basic incompatibilities between ARC en Krell. So, I can now exclude that; the neuralgic point must have been somewhere else.
4musica44107, very interesting to learn that Luxman is back with a vengeance. My first serious integrated amp was a L410 and I had a defect L550 for a short time that I had exchanged for a crate of beer. Beautiful machine, but unfortunately I never managed to keep it running for longer than a week, then it went belly up permanently (but hey, that's about the lifetime of a crate of beer, nothing gained, nothing lost).