The polyphonic BASS9 Bass Machine transforms a guitar into nine different basses and requires no special pickups, MIDI or instrument modifications. It relies on the same technology powering all EHX 9 Series pedals, like the award winning MEL9® Tape Replay Machine, but features a new algorithm maximized for transposing one to two octaves down with superior dynamics and tracking. Pays homage to nine of the best bass sounds ever Tracks impeccably and works on guitar without mods, special pickups or MIDI implementation Independent Effect and Dry volume knobs let you precisely control your mix at the Effects output Controls 1 and 2 have been designed to adjust specific parameters for each of the nine programs Dry output jack outputs the input signal at unity gain Compact, rugged, easy to use Power adapter included