Mojo Hand FX DMBL Overdrive Guitar Effects Pedal Inspired by the Overdriven Tube Tone of Renowned Boutique Amplifier Fine-Tuned Circuitry for Responsive Qualities of it's Namesake 2-Way Voicing Switch From Round and Robust (UP) to Thick and Meaty (DOWN) VOLUME and GAIN Controls and EQ with BASS and TREBLE Controls Powered by 9V Battery or Power Supply (Not Included)