Digitech Live 5 Intelligent vocal Harmony and Effects Processor Guitar Pedal | Cream City Music
Amazon.com: BOSS VE-2 Vocal Echo Pedal for Singing Guitarists | Real-Time Vocal Harmonies and Effects | Create Harmonies with Manual Key Selection | Connect Guitar for Auto Harmony Function | 24 Harmony
TC Electronic Harmony Singer Vocal Effects Pedal | The Music Zoo
Buy Mooer Audio Micro Pitch Box Harmony Detune Pitch Shift Guitar Effect Pedal | Sam Ash Music
TC-Helicon VoiceLive Play GTX Harmony and Effects Pedal