The Line 6 DM-4 Distortion Modeler Pedal gives you programmable overdrives and distortions in a floor stompbox. It holds 16 models of vintage overdrive, distortion, and fuzz effects; including the TS-808 Tube Screamer, Fuzz Face, Big Muff, Rat, Octavia, Tone Bender, Tube Driver, and more! With 4 programmable presets and an expression pedal input for realtime control of all effect settings. Bass, middle, and treble controls and true bypass switching.