Guys, I recently bought a Fiio E11 amp to improve the sound quality and boost the volume of my iPhone 4s and Phonak 112 iem's. The problem is that unless I switch the phone to airplane mode (thereby disabling the phone, text and wifi) there is too much interference (gsm, emi or whatever) to...

Hi Guys,   I've recently bought some Phonak Audeo PFE112's to use with my iPhone and I'm very impressed by the quality and clarity of the sound (still trying to decide which filters I like best). However there's a tiny fly in the ointment. I've run all my music through mp3gain to sort out...