I use 320kbps files in my iPod Nano and plug Etys (ER6) in directly. It's pretty quiet, even though the ER6 requires a lot of gain from the iPod. When I plug it into my Airhead, the noise level comes up a bit, even with my Senns. Oddly enough, the set up is much quieter out of the headphone jack of my Apple laptop. Better components, I suppose. I really wish I had something that plugged into the firewire port and contained a high quality dac. Soon...
Tim
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