Roland VT-4 Voice Transformer & Effects Processor Vocal Effects Processor With Harmonizing, Vocoding, Pitch Shifting, Hard Tuning, And More

Boss VE-8 Acoustic Singer Effects Processor Pedal Guitar/Vocal Processor Stompbox With Mic Preamp And Phantom Power, Harmony Generator, Chromatic

Roland AIRA Compact E-4 Voice Tweaker Processor Portable Vocal Processor And Looper With Auto-Pitch, Harmonizer, Vocoder, Onboard FX, Audio, MIDI,

Boss VE-2 Vocal Harmonist Effects Processor Battery-Powered Portable Vocal Processor With 24 Harmonies, Reverb, Delay, And Additional Studio-Style

Boss VE-500 Vocal Performer Effects Pedal Processor 32-Bit Multi-FX, Looper, And Vocal Harmonizer Pedal With 99 User Presets, 1/4" Instrument