The AdrenaLinn is a digital multi-effects unit with a drum machine and amp modeler all in one, designed by Roger Linn with some help from Dave Smith (credited with helping to conceive MIDI) and Tom Oberheim (designer of early analog synthesizers). Most notably, unlike other guitar pedals, the AdrenaLinn specializes in beat-synced effects, including modulation and delay but also a sequencer that provides looped patterns of filtered tones, all moving in sync to its internal drum machine or to midi. The drum section can also be affected by the filter section, allowing dance-style beats. Other unusual aspects of this pedal include note-triggered filter effects such as auto-wah, simulated talk box and guitar synthesizer sounds. The AdrenaLinn technology was also the basis of Roger Linn's partnership with M-Audio to create the Black Box guitar multi-effect and recording unit.