| It depends. Generally, cranking the gain on any drive pedal will introduce some noise into your signal chain. It's especially bad if you are in an area that has a high amount of EMI, RFI, poor electrical wiring, or poor bass or instrument cable wiring. That being said, I don't notice too much noise when I crank my VT. Might want to check the cables you're using, check your bass wiring and shielding, and avoid florescent lights, microwaves, CRT monitors/tv's, etc. | 
