All you have to do is pull out the band generously, it might be a bit tight at first but after a while they become very comfortable. BTW, try some RCA 6A5K or 5654 tubes with the EF2A, I think they made a big difference in clarity with mine and I love the way it sounds now.
I guess we have a lot of equipment in common!
EDIT: I see you tried the K701 and the DT880s and were not very pleased with them, I'd love to hear how you think the HD 650s compare to them after some listening with the EF2A. Hopefully you will be satisfied this time.
Edited by Satellite_6 - 11/3/10 at 5:36pm