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. The BASS9 comes equipped with a standard EHX 9.6DC200mA power supply.