Audionewbie: I hadn't noticed the divider had a slider either!
Seeing this thread active again has made me get them out again. I was waiting for international sales to be set up on their web site before I made a video.
One thing that I agree with that has been said by a number of people is that the bass is spot-on excellent with them. My only quibble has been the treble, but maybe because of what I'm used to with TOTL headphones. I have found a nice combination in the FiiO X5, which, being on the smoother-side of things, mates nicely.