VO-1 Vocoder

Innovative, easy-to-use vocoder pedal powered by BOSS’ famous guitar synth technology
Use your voice to dramatically extend the expressive range of your instrument in countless ways
Vintage mode for classic electronic synth-voice sounds and Advanced mode for all-new vocoder tones with enhanced clarity
Talk Box mode enables “talking lead guitar” tones without the hassles of a traditional talk box setup
Choir mode for achieving rich vocal sounds with no mic connected
Effect loop for sound enhancement and easy integration with existing pedals
Works with guitar, bass, or any instrument with a 1/4-inch output
BOSS five-year warranty

https://www.boss.info/us/products/vo-1/