I'd have to hear it (I think it will be on hand at CAF, and I will try to have a listen if so). Not sure I agree with the concept; seems more like a pair of mini monitors hung on your head than a headphone. At some point the compromises involved in trying to be a headphone and a pair of near field mini-monitors at the same time... Something's gotta give. Since there's obviously zero isolation for the listener or anyone in the vicinity, consider that the equivalent $4100 to $5300 these are projected to cost would buy you one seriously impressive pair of nearfield mini monitors. But I still would like to hear them because, hell, I'm an audiophile....