One thing you might want to think about when using an iPhone 4s as your source is that some amps will pick up interference from the phone unless you are in Airplane mode. My E11 certain picks up interference if it is closer than 12 inches from the phone.  Im waiting until I can get an I.Fuzen...

Thanks.

I have an E11 and it picks up a lot of noise from my iPhone 4s. I'm in the UK.

Hi, Do you get any emi interference from your phone with the E17 (assuming that is an E17). Cheers.

Great reviews and thanks for including the phone interference category, it's difficult to get that information anywhere else. Keep up the good work

+1 on the Phonaks, I love mine.

Will do. A list of amps that are properly compatible with the iphone would be very useful.

I started a thread about this yesterday! The noise is emi/gsm interference coming from the phone. If you put it in 'airplane' mode it goes away but then whats the point of having the phone? IMHO the amp isn't shielded sufficiently and Fiio shouldn't sell it as suitable for use with the iphone...

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 recently bought a Fiio E11 amp and L9 cable to use with my iPhone 4s. When I listen to music I get a lot of interference (EMI?) from the phone. I can stop it by putting the phone in 'Airplane mode' but this means I can't recieve calls or text messages. Is there anything I can do to...

It's a Fiio E11 and L7 lod 

Does anyone using an iPhone as a source thru an amp get that annoying 'diddley dit dit diddley dit ' interference and is there a way to stop it?

Thanks for the input fellas, I'll probably go for the E11 but I do like the look of that Neco Soundlab one Thing Fish recommended. Decisions, decisions

Anyone used a Fiio e11 with an iPhone 4?

Thanks Thing Fish, that looks like a nice piece of kit.    No-one else using an amp with an iPhone 4??