I got these after breaking a pair of Sharper Image noise-cancelling headphones, thinking that Sennheiser would be a good replacement, noise-cancelling or not. Not really. I used them just one day, trying them with digitally remastered music, even music mixed in *5.1 Surround Sound*, and there was just no boom from the bass, like was promised on the packaging. At a higher volume, the music is slightly more quality, but the music still lacked substance to me.There was this, and there was the fact that the leatherette around the edge of each of the earpieces gave me discomfort because the phones concealed my ears completely but not my lobes, and it felt almost like blood got cut off at that part. For this and the above reason I am sending these things back.In all, don't get these if you want wraparound headphones and you think "Sennheiser = Class." I suppose these would be more suitable as DJ headphones, but I do not know.