DT880 works fine for me. I raised the volumes and I don't hear any distortion. But then again I wouldn't listen to anything at such high levels as it hurts my ears.
On a side note, I find that the E18 sounds better than my Audinst MX1 with all my other headphones (HD598, TDKBA200, DT1350). The Audinst sounds too soft and smooth, I feel like the details don't pop up. I guess its the difference in sound signatures?