I listened to the K701 on my MkII before, twice and they had varying degree of pad wear. The new pads and my old DAC-AH had a deeeeeep soundstage with the vocals in front of my eyes. Although on Epica's The Classical Conspiracy, there was something weird. Normally in most other cans the orchestra was staged behind the band or mashed up with them if what you're using can't stage and image well; the K701 with new pads put them ahead and below the band, like they were performing in a stage set-up like the Oscars where they had the orchestra in a pit. The old pads with a Keces DA-151 though was a lot like the HD600 in terms of tonal quality and staging/imaging; if anything it was very slightly deeper, with the vocals in some cases just in front of my eyes.
MkII by the way isn't too 'dark' and coloured for a tube amp, but I personally think it has just enough current to be decent with the K701. The only cans I've tried that really had the MkII sounding blunt at the treble was the K66. Even the HD600 just sounds smoother with it but no audible roll-off vs straight out of my Marantz CD60's hp out.
