Guitar/vocal multi-effect with the ability to play back, simultaneously with the first, a second voice in a higher or lower octave. Harmony & Level adjustment. Includes 3 reverb programs (Room, Club, Hall) for the voice. TONE selection button for automatic EQ, Compression, De-Essing, and Gate adjustment. Microphone input/output (XLR) with gain adjustment. Guitar input (Jack). Guitar through output (Jack). Micro USB input for firmware update.