I've had my "Glass Ceiling" Monoblocks for over six months. I should just say thank the Baby Jesus for Klaus, but I'll say a little more.
My system:
SP Technology Revelation MKIII's w/ external Mundorf xovers
Empirical Audio SB3, Pace-Car, and Modded Northstar 192 DAC
EVS Ultimate Attenuators
When I first received the amps my entire system had turned over. My system sounded amazing, but I wasn't sure how much it had to due with the amps. Since I suffer from audiophile paranoia, I bought a couple other amps to a/b against the Odyssey's--a pair of Nuforce REF 9 V2's and the newest version of the Van Alstine Ultra 550. Both are highly regarded amps. Nothing in my system changed for the comparison except the amps. My setup is extremely revealing so the differences between the amps was easy to detect. To my surprise the 550 and REF 9's sounded quite a bit alike, and not much like the Odyssey Monoblocks. Mostly because the Odyssey's were simply in another class. Had I never heard the Odyssey, I might have been satisfied with either of the other 2 amps.
The Odyssey throws a huge 3D soundstage, have incredible bass, and put my power hungry speakers at ease. The instruments have an immediate impact--snare drums feel like they're smacking me in the face. They're also transparent and resolute to a degree I've never heard before. The amps make the music come insanely alive-kind of like the experience of being at a concert. The emotional connection--the reason we all find so much pleasure in listening to music--is enhanced to such a degree it's palpable. I could finally stop leaning forward in search of that missing link. I could go on, but what's the point? They rock.
I was really surprised how big of a jump the Odyssey's were over the Nuforce and Ultra 550, since I consider them to be in the same price bracket/discussion. The latter 2 amps weren't horrible. They just seemed lifeless, flat, and boring when compared to the Odyssey's. It's kind of like the difference between sitting on your hands at a concert or having no choice but to stand and dance until you pass out. For me, I'll take the latter.
The biggest compliment I can give Klaus, and his "Glass Ceiling" Monoblocks, is to tell him my amplifier search is officially over. No more buying, no more selling, no more packaging, and no more shipping damage. Thank GOD.