Been listening to my K601 all night. They've been in storage for the last few months and rarely used. Still sound as good as I remember.
They do seem a LOT warmer than my Q701 and when I use the Crossfeed, it's even "Worse". Not sure why, but crossfeed seems to make these sound really good. It does make them slightly less clear though.
Not quite as crystal clear as the Q701, but still very good. There seems to be some weird peak that's even more present than on the Q701. Mostly during some Chinese pop music. Probably just in the recording or could be caused by my DAC. Lower treble I guess.
I think the low bass is definitely more present than compared to the Q701. Not by much though and I should compare them some more.
BTW my pair is made in Austria. Serial 19714. I previously had a very early pair and it had this very very annoying lower treble peak and it was made even worse with the Asgard. Never went away on any amp, but on this pair it's not too bad.
Wonder what the K601 would sound like with K500 pads? I should go try this. Probably just more forward mids and less bass. I don't really want that. K601 pads are more comfortable anyway.
Seems these also need the volume cranked about 5% higher than the Q701. No surprise there.
Edited by tdockweiler - 2/2/12 at 1:29am