Our SOD-20 Overdrive is our take on the classic Vacuum Tube/Valve Overdrive effect. In a traditional tube amp, when you push the tubes beyond their normal limit, they begin to produce signal clipping and harmonics that go from warm to hot-driven depending on how far you want to push them. On the SOD-20, we give you a selector switch that lets you choose between Warm & Hot tube parameters. Within those parameters, you can adjust Tone, Gain, and Volume independently via the weighted knobs. Whether you want to mimic a Warm Tube drive or a Hot Tube drive, the SOD-20 can help you get there.