Originally Posted by TheRigaletto
It's the type of buzz that goes away when I touch the end of the 1/4 inch that goes into the guitar.
I've used a wrist-loop wire thingy with an alligator clip on the other end for just such occasions. Though the performer often feels a bit strange being "handcuffed" to their instrument, the silencing of the buzz is worth it.
What DI are you using? Any other DI's you could try? I find that at least one of ours (U5, 610, Fearn, LTD1, Germ, JDI Radial) will often work better for some instruments than others regarding buzz.
The Radials in particular have an amazing ground lift that seems to knock the buzz out of nearly anything. I'm a big fan of that box lately.