Many people hearing orthos for the first time are usually awed by the black background +ortho speed. When I still had the He-500, I usually think of them as HD600 on steroid - do everything the Hd600 does, with better speed. I do agree that with some metals the He500 sounds "dim" for a lack of a better word; but the speed made up for it.
Stock velour pad is 20 pounds I think. You can take the pad mounting disc and mount the Dt990 pad also - they fit. Not sure how that will affect the sound though. Other pads to try includes the Stax O2 Pad, Denon stockpad, J$ beyer pad, Lawton angle pad, jerg modded pleather pad.
Edit: and Audeze vegan/leather pad too
With metal they don't seem to shine as much tho. Strangely I also asked my dad to give them a try and he is not a big headphone listener but he immediately said the HE500 sounded much better than the HD600.
Also what's some good pads to buy for the HE500? the velour pads I got with them are a little worn.
Edited by khaine1711 - 3/14/13 at 1:41pm