I already acknowledged “untapped potential” in my previous posts when I alluded to having a THX AAA 789 and it being better than the G6, remember? I assume you’re not suggesting that the HEL can unlock (more) untapped potential in the HD800s that the THX cannot. . .!? ;-p It’s the degree of untapped potential that the HEL might unlock in excess of the G6 that I am not sold on enough to fork out a couple of hundred more. As for wall wart, pretty sure MLE’s review and if not that then the Schiit product page says it *needs* a wall wart suggesting usbx-only from source device would be insufficient. Are you saying that a PS, Xbox, laptop or whatever could power it with just a second USB cable?