I apologize for resurrecting a dead thread but I always wondered what my m80's would sound like if I had a tube amp. Can someone describe what the axiom speakers sound like when running on a tube? I always got close but for budgetary reasons never pulled the trigger on a decent tube amp. For the record, the two best systems I have heard were running off a tube amp. One was with B&W Nautilus floorstanding speakers and the other was running with older floorstanding Thiel speakers.