Just got my 3V2B's today. JEEZ, the bass is heavy in these. Im not going to judge them until they are broken in. I'm going to just let them run 24/7 for a week or so, even when I'm not listening, to speed up the process. Straight out of the box, the bass overpowers the mids/highs big time. In the 10hrs they have been used so far, they have gotten better, but still have a ways to go. I'm using them on a HeadAmp Pico. I can tell you these things will handle a LOT more than the rated 30mW of power that they are rated at. The pico is around ~700mW rms. I cranked it up passed 3/4 volume on high gain with almost no distortion (just for a few seconds). Personally, at this point in the break-in phase, my denon d2000's blow them out of the water, but they are a different class of can, and not meant to compete in the first place. Overall, I'm impressed. I'm really looking forward to them loosening up a bit though.