Hello,
You speak about the beyerdynamic DT770 and DT880 250 OHM ? So for you with the E11, no really difference ?
And for the FIIO E11, i read on a french review that when you plug an iPhone with a FIIO E11, you have big pertubations (bip bip bip) when you take for example the underground and your iphone change to 3G to WLAN to Edge to 3G, etc... Do you have this problem ?
Thanks.








