Hi, this is my first post on this forum, nice to meet all of you. I have some question to ask regarding the issue of Bose QC 15 and Sennheiser HD 598 specification. No I wouldn't ask which one I should buy (bought both of them already). I read a lot of comment in this forum and elsewhere that HD 598 can be very mush superior to Bose QC 15 so I decided to give it a try (having QC 15 already). The result is that HD 598 sound surprisingly bad, very mush worst than QC 15. The instrument sound very overwhelming and it required quite a lot of volume to be clearly heard. I usually listen to classical music, so I tried them on a lot of track on that type, none of them displaying the suppose spatial quality HD 598 suppose to show, the sound seem to be even on FLAC. What's wrong here? Is that because that's the limit of my on-board sound card on my laptop? or do I suppose to use any specialized program for it to be truly shine (I used WMP, Winamp, VOP most of the time)? It sound so bad that I have to adjust the equalizer for it to be bearable (brought all to 0 db). It sound better but definitely not even close to QC 15 quality. Please suggest, I know HD 598 suppose to be one of the best head phone to go along with classical music. Something seem to be wrong and I really like to have it fix.