Boss VE-1 Vocal Echo Seven types of ambience effects with adjustable settings for your voiceDouble-tracking effect to instantly thicken your vocal soundEnhance effect and Pitch Correct (including hard-tuned "electronic voice" sound)Adjustable detailed parameters for advanced usersBattery or AC operation enables performing anywhereBuilt-in Memory for switching between the best settings for each songUSB audio port provides versatile options for use with your computer