After running the amp for the last 6 hrs, the difference was obvious from the start (my roommate could hear big improvements sitting in the adjacent dinning room). I’ve died and gone to audio heaven! Unbelievable is all I can say, Shunyata was made for tubes! 3D is an understatement here, and talk about clean sound. Sounds like a whole different system! I’m listening to everything all over again in a more real-like soundstage with articulation and low level information that I didn’t know was there. All my CD’s sound completely different… And I really understand the PaceSetter name. You were right, I found my self tapping my foot to the music, the attack on each note was quick, and clean, and… real.