This is a system that brings plenty of detail, speed and energy without loosing any musicality and truth of timbre - I have tried SET, SS, Planars, Ribbons, sealed baffles, ported designs and - IMO this is pretty close to my ideal setup.
Great system! Regarding amps for the UNOs, I too have tried quite a few. And I must agree that a push-pull valve amp is the way to go. I'm sitting very happy with my Octave V40, a 40wpc EL34 based amp. Best regards, Ola