Electro Harmonix Voice Box

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