I've tried all three with several amps both tube and ss, and despite the numbers, the 701 doesn't seem to be a very picky can. I should admit that I'm a real tube fan and just looking around from my desk, I guess within eyeshot, there's about $16K worth of tube gear ( big and desk rigs). I would have to say that, from what I've tried, that all three cans are a good fit but not great with any of them, but, for $350, it does an excellent job. It is a very balanced amp with clear and fast sound. I can be a bit on the revealing side so, upstream components need to be good. I think, if I had never heard better gear (speakers/ headphone rigs) I would be satisfied with the sound with all 3.