I received this from an acquaintance, but I haven't been able to confirm power/operation because I don't have a power adapter. This is a junk item, so please refrain from claims or returns. This is an auction for the main unit only. The multi-function effects unit, the M9, allows for a variety of sound creation with its 6 switches. - Model: M9 - Input Terminals: INPUT - Output Terminals: OUTPUT - Effect Switches: 6 switches - Power: DC 9V - Country of Manufacture: China Thank you for viewing.