I am using my FitEar TG!334 with the Hifi M8 LX and there is no hiss! This is with the lowest setting for gain. It is definitely suitable for iems if you ask me. Much better than the Theorem 720 and ALO RX Mk3 B+. Of course, it is also excellent for hard to drive headphones!
You have to buy this M8
Edited by AlanYWM - 10/10/13 at 10:57am