Double ridges (of varying width and duration) at 4k and 5k. This explains probably what turned me off the most. The sudden dip from 500Hz down explains what I meant with "lack of warmth." Otherwise, it's very clean.
PS: Big thanks to 200poundsofamp for sending me a box of headphones. This kiddies, is how "community" works. Headphones don't automatically appear before me nor do manufacturers freely send me samples for review or independent measurements. Hmm. I wonder why.
They really sound like they have a lack of warmth? Very strange. I must have weird preferences, because the SRH-840 is almost too warm (sounding) for me! Crazy, I know. It might be a combination of amp or source. Who knows. I actually didn't realize this until I compared them to my DJ100 and my KRK KNS-8400. I even think the SRH-840 even sounded warmer than my M50.
The SRH-840 was an old favorite, but like another poster just mentioned, I couldn't wear them without pain. I remember them having a frequency spike somewhere that drove my ears crazy, but I figured it was a case of garbage in and garbage out, but maybe not.
The 840 was the first real headphone I had bought after using my Triple Fi 10 for 3 straight years
If you ever wanted the KRK KNS-6400 for testing, let me know. I love that headphone.
BTW your K601 impressions remind me of my first pair of K601's. It was a very early pair and I think there must be some different pairs around. The early pair I had had very, very fatiguing and ear piercing upper mids.
I got a pair two years later with a higher number (19714) and it sounded much more balanced. Nothing in it's signature jumps out at me. It is picky about amps though. On the Asgard it's horrible. It clearly is much, much warmer than the K702. Mids are much fuller than those of the K702 I had and just a lot more fun to listen not. Not thin sounding at all like the K501 and K702.
Maybe when I get my K501 back from loan I could send that
Edited by tdockweiler - 11/10/11 at 10:48pm