Their is apparently a new revision coming out for the Studio V. Should have even less hiss. That's a very good recommendation though, from what I've read about it and heard from owners.
I have the Hisoundaudio Studio V and love it small size, very long battery life, and SQ is quite spectacular! I'm sure even the lower cost new models of Hisoundaudio will even be a SQ jump over Apple products. I've had the Ipod touch, Hifiman 601, and T51(Sflo2) and the Studio V is much cleaner in SQ with the only drawback a very basic interface but I don't mind that and with certain very sensitive IEM's you can hear some hiss which has been improved upon in subsequent models.
Edited by kenman345 - 3/9/13 at 7:09am