Is this Jeremy from Stuck in Kaos up in Martinsburg, WV?
I always run my Dual Rec ('94 2 Channel) on the Bold and Silicon Diode settings. Never had any noise problems. A few quick questions for you, though...you mentioned it makes that noise when using those modes. Does it do it when you're using the other modes (tube rectifier, spongy)? Also, are you plugged into any type of power conditioner, or into a surge protector/outlet? If it's running through an outlet that's wired up to other things, you could be picking up interference from things, like computer fans or appliances that are connected in the wiring. And like Jbird mentioned above, check to be sure all the tubes are secure in their slots, and that the V1 has it's shield properly attached.