I was under the impression that this is more of a transportable device rather than portable/pocketable device.
Edit: Holy crap!!! I didn't know it was this size!!!
OK, OK. Battery life, over powering monsters it is then. Either way it should be able to drive full size cans like Sennheiser HD600/HD650 quite well.
Edited by wormsdriver - 10/3/12 at 8:34pm