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Guitar Pedal X - GPX Blog - Boss massively revamps its GK Guitar Synthesizer Platform with brand new evolved GM-800 Workstation, and a more convenient 1/4" Serial GK Cable system
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Amazon.com: Aural Dream Legend Formant Synthesizer Guitar Effects Pedal provides 9 Human Vowels,4 Resonance modes and transition Voice based on expanding Wah Filter similar to"Talk box",True Bypass : Musical Instruments
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