I was actually expecting these to be a lot bassier - but they aren't. The overall signature is clear, clean and very balanced. It's only when you push the bass to the last (6th) section of the dial that it really comes out to play.
That's the answer I was hoping for! I had faith in Sennheiser, and I couldn't imagine that they would call this a 6xx and it be a Beats Studio or something with bloated bass.