When I have a pair of IE phones (fake Sennheiser IE 8s, Klipsch S4i, and UE Triple.fi 10s) connected to my NuForce Icon-2, I get this, like, beeping sound. But, you know, it continues in duration. It sounds like a beeping sound that just never ends. I would call it a hum or buzz, but that's not what it sounds like. You get the idea?
What's the deal with this noise? I don't have this problem hooking up full-sized headphones to the amp. What is it about IEs that causes this sound, and is there a way to get rid of it?
