This overdrive pedal reacts sensitively to the volume knob on your guitar. It's said to be a pedal created with the sound of Michael Landau boosting an amp with an SD9 as a sample. With a 3-band equalizer, a presence knob, and two type switches when you open the back cover, it's easy to create all kinds of sounds, and you can handle most songs with just this one pedal. MIGHTY DRIVE TRCFX