TC-Helicon VoiceLive Play Acoustic Guitar and Vocal Effects Processor Pedal | Sweetwater
Amazon.com: FLAMMA FV03 Vocal Effects Pedal Voice Changing Sounds Like Robot Male Female Baby with Delay Reverb Effects for Polishing Up Vocals Includes Guitar Input with Optional Guitar Reverb Effects : Musical
BOSS VE-20 Vocal Performer - Effects Processor for Vocalists