Just got my ODAC, it is small and compact, really easy to take to anywhere, ofcause it sound very good and detail also.
Only complain is the output is a bit low, but mating with O2 is perfect.


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Have the O2 for sometime already, I use it to drive audio technica cks77 and sen hd650. I feel it is lacking in bass to my liking, I found this mod in DiyAudio http://www.diyaudio.com/forums/headphone-s...tml#post2924330 look at post 59, the guy listed out how to do it. I have done it, and I don't have a switch like him to turn it on/off, mine stay on all the time. I found the extra bass I need after the mod. If you want some more bass with O2, you should try this mod, adding the C value will give you higher bass boost.

It is design to drive most of the h/p, it shouldn't be a problem to drive shure se535. You can google around, I am sure some shure owner has mention it some where in Internet.

I copy this out for you "RUN TIME - The default design with 250 mAH Ni-MH batteries has 7 – 9 hours of run time on a charge. "

You can read all about it here http://nwavguy.blogspot.com/2011/08/o2-details.html

You should got the answer there.