I think everyone else has said this, but it's very much confirmed that the XM6 (and from what I remember of its sound, the XM5) has channel imbalance at low volumes. Use the +75ohm switch - it exists for a reason.
(For the record, I use the switch with my K702s because they're pretty dang sensitive, surprisingly, and I prefer to listen at lower volumes. When I'm using my DT770s though, the +75ohm switch doesn't noticeably alter the sound.)
-- Griffinhart
Quote:
Originally Posted by
Lumify 
I bought the XM6, fully loaded with extras. He even gave me a red version at my request. It sounded great, but the channels were imbalanced. I think the left was louder than the right. I sent him an email, and I didn't hear back. I emailed again three days later, still nothing. A week later, I sent a final email asking for a refund, and I finally got a response. He said that he was busy, apologized, and asked if he could fix it. By then, I wasn't willing to cooperate any more, I just wanted out.
Buyer beware.
