No they're not a basshead's can. The sound is very, very much in line with the Audeze family. None of the Audeze's sound all that open to me, which contrasts with my feelings about the HiFiMan line. With that said, I don't find a large difference in sound between the open and closed Audeze's. Unfortunately, they weren't allowing us to use our source, unlike many of the booths, so I couldn't use my test tracks to really understand the sound. IMHO, if you like the Audeze house sound, but need more isolation or even just prefer the look of the closed, as I do, you needn't hesitate in their purchase. By the way, here is the prototype DAC/amp they were powered from:
Audez'e is making their own amp/dac now?