I wound up throwing TSE808 in front of the amp and turning the amp gain waaaayyy down from the initial preset setting. Made a few other changes and came up with this "improved" clip. There is still something going on in the higher frequencies. Perhaps this is the noise the other poster was referring to? http://prime.aspserver.net/Thermionik2.mp3 Anyway, I wanted to come back and post this "improved" clip in the interest of being fair. I would suggest modifying some of those presets. +6db input and amp gain settings of 8-9 seems extreme. JMO.