when I first plugged it in at home with the mod factor into the DL4 it made all kinds of weird oscillation noise, so I rerouted the DL4 into the Mod Factor and it got much quieter. I am now running both my amp and pedal board though a Furman PF Pro and I have no noise at home. However at the gig with the same setup i got all kinds of weird noises. When I turned off the DL4 the noise went away, but noise was never an issue until the I started running the Modfactor and definately oscilated at the same rate of the patch on the Modfactor…even with the Modfactor bypassed. I did notice that volatge at the gig was a little higher, but still within a normal range.