[shigzeo]

yes. i think though i may be overly sensitive to hiss. the only source i have not heard hiss from is my usb transit: with canals of ohm 16 and sensitivity of 100-110. but... with um2, even that made some noise and a laptop hissed like mad, the meizu sony and irivers annoyed me madly with e500 but not as much as um2. e500 is not that sensitive compared with some but... it hisses like a snake for me.

i hear it during playback too even with d2 or nano 3g. the d2 has low level of hiss and nano hisses madly until you navigate to music section: then something kicks in and it gets as quiet as the d2.

my sony i can hear hissing even when on a bus. i think i would not hear it if i was on an airplane