If your tube amp brings you the most pleasure, then that's great. I'm sure if I heard your system, I'd probably think it's a good match for the rest of your components/room, perhaps. BUT YOU STILL ARE TOTALLY WRONG ABOUT KRELL, and if you heard my system you'd realize it. IT'S ALL IN THE SETUP. As for who can hear better than who...I can hear a 20 kHz sinewave from a test CD (and the artifacts that must accompany it from that limited medium), referenced to a 1 kHz signwave when it is at about 79 dB at the sweet spot (because my SPL meter's mic isn't accurate at the frequency extremes). I can also hear a CRT TV's 15.6 kHz sweep from the other end of my house. ALL I'M SAYING IS, just like all tube amps don't sound alike, neither do all solid state ones. PERHAPS THE KRELL YOU HAD WASN'T FUNCTIONING PROPERLY, or was a "lemon"...