I really really love the wooden dock, but have one problem: I get a buzzing noise when it's plugged in, but the empeg has been removed.

Note: the stereo outs go to a small behringer mixing board, which feeds a pair of self-powered monitors (KRK V6s).

If I unplug the dock from power, the buzz goes away. If I dock the empeg into the unit, the buzz goes away. If I unplug the dock from the board, the buzz goes away.

The only thing I can think of is there's some sort of ground loop problem between the A/C adapter and RCA outs when the empeg isn't installed.

Any ideas on how to remedy?

-brendan