Ok, since I'm at home today doing work preparation, I have time to play around more, so next up is the HD-800s single-ended. They have extra damping and an ALO Reference 16 cable.
Music: Amber Rubarth -- A Kiss to Build a Dream On (binaural). Players were volume matched to -0db pink noise at 115.7dB (equivalent to a much quieter listening volume with regular, uncompressed music).
While very pleasant to listen with, the soundstage seems smaller than with the...