The Electro-Harmonix US9.6 DC-200 9v power supply.

This is the power supply used by Electro-Harmonix for the majority of their current production pedals, as well as a direct replacement for many other stomp boxes on the market including most Boss, Ibanez, MXR, Digitech pedals as well as many other single stomp boxes on the market that use a center negative 9v 2.1mm barrel plug power supply. Please check power requirements prior to using this with your pedal.

This works with the following Electro-Harmonix pedals:

USA Big Muff Pi (2014 version), Double Muff, Analogizer, Bass Big Muff, Bass Blogger, Big Muff Tone Wicker, Chillswitch, Clone Theory, Deluxe Bass Big Muff , Deluxe Big Muff, East River Drive, G4Bm, Germanium Od, Hot Tubes, Knockout, Little Big Muff, Lpb-1, Lumberjack, Memory Toy, Metal Muff, Micro Metal Muff, Micro Q Tron, Muff Overdrive, Nano Bassballs, Nano Bass Big Muff, Nano Big Muff, Nano Clone, Nano Dr. Q, Nano Small Stone, Neo Clone, Neo Mistress, Octave Multiplexer, Od Glove, Pocket Metal Muff, Rtg, Satisfaction Fuzz, Screaming Bird, Signal Pad, Steel Leather, Stereo Pulsar, Switchblade +, Mole, Crying Bass, Crying Tone, Expression, Pan, Talking, Volume, Slammi, Hog2, 45000, #1 Echo, 8 Step, Bass Metaphors, Bass Microsynth, Cathedral, Deluxe Memory Boy, Deluxe Mem Man 550, Ehx Tortion, Enigma, Epitome, Freeze, Graphic Fuzz, Holy Grail, Holy Grail +, Holy Grail Max, Holy Stain, Iron Lung, Memory Boy, Micro Pog, Microsynth, Pog2, Ravish, Riddle, Ring Thing, Soul Food, Soul Preacher, Stereo Electric Mistress, Stereo Hazarai, Stereo Polychorus, Stereo Talking Machine, Superego, Tone Tattoo, Voice Box, V256.

Specs: 9.6-Volt 200 mA regulated barrel adapter. 5.5mm x 2.1mm center negative.