The EHX Voice Box Vocal Harmony Machine and Vocoder packs a multi-functional vocal synth processor into a tough and compact chassis. Sing and you'll have a troupe of backup singers following you in perfect harmony. Or, use the built-in vocoder to unlease classic synth-robot sounds. The harmony processor creates 2- to 4-part harmonies directly from your vocals, in the same key as your accompanying instrument. Studio-quality reverb lets you independently add depth to your dry and harmony vocals. The focused 256-band articulate vocoder, designed by the same EMS genius who made vocoding famous, features adjustable harmonic enhancement and controllable formant shift. Plug in your mic and your instrument, and let your voice-or voices-be heard! Features: · Harmonically matches any electric instrument you plug into it · Professional quality pitch shifting algorithm produces realistic harmonies · The Low & High Harmony independently produces two harmony notes: 3rd and 5th · 9 accessible programmable presets · Natural Glissando · Gender Bender knob allows for male/female formant modification · Built-in Mic Pre with Phantom Power & Gain Switch · Balanced XLR Line Output: Interface directly with any mixing board or A/D converter · Power supply included