br 1600cd grounding problem

[caiomhian]

Ive Just Got A Boss Br 1600.
Its An Amazing Bit Of Kit.
There´s Just One Very Anoying Thing.
There´s A Ground Loop I Cant Get Rid Of.
It Happens When I Plug Directly In With My Guitar
Theres A Hum When Im Not Touching The Strings And When I Touch The Strings It´s Gone.
The Same Thing Hapens When I Plug My Bass And Acustic Bass.
There Is No Hum When I Go Through My Tube Amp And Then Into The Studio.there Is No Problems With The Xlr Inputs Just The 3/4´s.
This Is Very Anoying As I Paid An Arm And A Leg For It (br 1600cd).does Anyone Else Have The Same Kind Of Problems.
Any Help Would Be Greatly Accepted.
Cheers.

[Valley Arts Kid]

Have you tried moving the instrument farther away from the BR?