Today I really pushed the HD800. Wanted to see how loud it can get without distortion. I was amazed how loud the music got and without any distortion. I have to say I really enjoyed listening to Daft Punk blasting in my ears. Could have listened for a long time but the treble was a bit too much to take for my ears on some tracks. But wow the Lehmann really pushed this thing hard. Very impressed with the ring radiator driver.
I once put some 'music' earplugs in that mute anything over 85dB. Plugged the Senn into my (Corda Rock iirrc) and cranked thm nearly full dial. The INSANE bass at those volumes literally had the HD800s almost shaking loose from my head. Good times.