I've heard it is a bit large for a portable, but I use my headphones mainly when going to and from uni - with a bag. So size doesn't really bother me
My current set up of a Ipod 5.5 + E11 is almost too big for some of my jeans anyway, and it is pretty heavy. I have a clip+ and CMOY for when I need ultra-portability (or just use my phone).
Thanks for the replies though. I'd get an ODAC separate for the computer anyway. Just wanted to know if it was possible to have it all in one with batteries