- Boss VE-22 Vocal Performer; professional multi effects vocal processor with Compressor, EQ, Delay, Echo, Reverb and more; signal processing for Lo-Fi, Distortion, Radio, Ring Modulation and other exceptional effects; Pitch Correction; Vocal Harmony and Voice-Doubling; intuitive user interface with Color-LCD and 3 Knobs; 50 Presets + 99 User; XLR microphone input with 48V phantom power and Gain-Control; two XLR outputs for Stereo, Dual Mono or Wet/Dry; USB-C for recording and Audio Playback via computer or mobile device; Aux Input; Looper; three customizable switches for foot or hand operation; Expression-Pedal-input; up to two external switches usable; battery powered (4x AA LR6); optional power supply (PSA-S, not included); delivery content: VE-22 Vocal Performer, Startup Guide; 4x AA LR6 battery, safety instructions.