The EQ-20 Advanced EQ gives guitarists, bassists and other live performers 10 bands of programmable digital EQ with stellar sound quality. Physical sliders make instant EQ tweaks easy, and a straightforward Write function permits instant storage of EQ settings into nine memory locations.-- World's first programmable digital 10-band graphic equalizer pedal for guitarists, bassists and other live performers-- 9 internal memories for storing user-created EQ settings-- Level switch for connection before amp or in effects loop (+4dB)-- Professional sound quality using superb A/D-D/A converters-- Single purpose design; simple user interface