Boss VO-1 Vocoder PedalBOSS's VO 1 Vocoder Pedal combines a vocal synth and a talk box into a stompbox chassis. Using the onboard XLR microphone input, plug in a microphone, and vocally modulate your guitar's signal using one of the synth or talk box modes. This cool effect is not just for guitars. Plug in your bass or a synth and see what other cool tones you can achieve. Controls Laid out in the familiar BOSS style, the VO 1 is intuitive to operate. The concentric Level