Well, my experience was not too good, either. After realizing my upgraded HT3 (full Kismet reference internals) was not performing well, Klaus determined it was damaged in shipping. I lugged it back to UPS store again, and sent it back. This time, Klause wanted to return ship it via air parcel. I agreed, since I live near Newark airport. All in, I think I was out about $350 for the 2 round trip shipping.
I got my crossover issues resolved, and everything sounded wicked good, for about 4 months. Then, one night in May, while listening to some music on my server, first one, then the other channel went silent, along with some sparking inside the amp
I am sure Klaus would offer to repair it, again. I cannot handle lugging this monster to UPS again, or even lugging it up the stairs from my basement. Then there would be hundreds of dollars in shipping. And I have to assume that the great sounding parts Klaus uses are just not reliable, like the parts used by other high end amp makers which seem to last for many decades without issues. I said to myself when I ordered the upgrade that when the upgraded amp died, I would move on to a lighter amp with a better reputation for reliability. And that's what I did. I now have a pretty nice sounding class D amp that I am pleased with. Is it as good as the Kismet Reference? Sort of, but in different ways. Better in some ways, not as good in others.
I guess Oddysey amps are for people with above average back strength and above average patience (or at least a decent spare amplifier lying around).
I am neither that patient nor that strong, so I must part ways with Klause and Odyssey Audio.