Originally Posted by ADD
Clearly you and I hear in a similar way. I know the majoirty here would never use words such as aggressive and bright when it comes to HD580 / 600, but I could only listen to mine for short periods. And that was after notch filtering them at around - 3.5 dB between 3 khz and 5 khz (not doing that made them even more aggresive sounding). The strengths of the HD580 /600 is in smoothness, damping and lack of grain, but I agree that they come across quite aggresively and bright in the upper mids none the less.
Totally agree with this assessment. I've been insisting on the headphone forum for years (to deaf ears) that not only the 580 and 600 but--though to a much lesser degree--even the 650 are rather glarey in the upper mids. This was the first thing I noticed with the 600; I too couldn't listen for more than a few minutes. Oddly, the 595 doesn't have that trait at all; if anything it's slightly recessed in the upper mids, though livelier in the treble--a different signature but still very recognisably Sennheiser. (It's this no doubt which makes the 595 more suitable for second rank equipment and earns them so many kudos from users outside HeadFi. And perhaps would make them suitable for audiophiles with inordinate upper-mid sensitivity). I'm just discovering since getting a dedicated HP amp (Cute Beyond, which I can hardly praise highly enough for the price
, plus a Marantz CD17 MKII for source) that the 650 can be pleasurable on MOST CDs as opposed to merely SOME, and I'm hoping eventually to make them pleasurable on ALL CDs (well, other than the totally crap ones anyway). Could take a while though.