I have the OE1s. The best mods for this headphone are to cover the two ports on the bottom with thick tape and upgrade the detachable cable. It takes about 2 minutes and is so easy a 1 year old could do it. With the mods on the OEs they easily outperform all the regular Beats/Sol/etc. and even the Senn Momentum ON Ears to my ears and preferences. But they still lack the the very micro detailed highs/performance of the DT1350. Just sayin'. They aren't as bright as I like but do approach the better mid-hi tier of Sennheisers in sound. Going between reduced bass and eq off setting on the ipod..I am very reminded of the HD580/600/650 sound...not quite there obviously as they are 1/5 the size but the similarities are uncanny- no joke. I for one am completely suprised at these little headphones after getting the bass reduced to an acceptable level. They have a huge soundstage for an itty bitty closed can. I dismissed them at first because..well.. they are Bose afterall. But these are actually really good portables after the simple adjustments and the most comfortable things I have ever put on my head. I think I am gonna take the pads apart when they wear out and reuse the black plate to retrofit some round velour cushions with bigger openings. But as they are now, they are more than acceptable. But left stock, they were unlistenable with the bloated bass that bled into the other bands and made a muddy presentation. You must plug the ports...even permanantly.... to hear what these are really capable of. The clarity jumps tenfold in the midrange and all the muddiness is gone. I'm not making this up.. it is night and day for these headphones. I've been using my OE1s in this configuration for 3 weeks straight. Working very well for me other than I find them slightly dark in the exact same way I found the HD650 dark.. Pic is from the web..obviously someone else tried this too. My tape is cut perfectly to size and isn't noticeable. :^). Other thing is these highly benefit from amping. Alot