I'd have to say that my memory of Dave's rig at the Boston Meet (RPX-100 + balanced Ed 9s) was much less offensive to my ears than Boze's this past weekend (Krell + SE Ed 9s). The bass was so overpowering single ended that I just couldn't listen to anything else. It reminded me a lot of the Hifi 700s that I used to have and reinforced my position that there may be no better cans for movies than Ultrasones. Music on the other hand, I have yet to hear sound natural coming from an S-Logic can.