[sunrunner20]

I just got my Fiio E6 in for my Sh440 headphones and noticed if I try to use it with the headphones out of my iPod 5g I get very noticeable background noise. I've got a cheap Line out/USB cable incoming but am not sure it will fix the issue. Is noise with the 5g headphones out a common issue with a known solution or am I SOL on using the amp with my iPod?
 
 
Also, the e6 performs perfectly with my iPhone 4s headphones out.

 

[Lumos]

I have background noise while I am charging battery. I think USB cable makes that noise