TC Electronic - A state-of-the-art intelligent harmonizer pedal that features expressive MASH technology and powerful TonePrint editing. Capable of beefing up your playing in any musical style from country or southern rock
TC Electronic Quintessence Harmony Pedal... Will It Work With A Bass? | TalkBass.com
TC Electronic Quintessence Harmonizer Pedal – Kıvılcım Müzik
Intelligent Harmony Machine VS Quintessence: Which Wins? (Harmonizer Shootout) - YouTube
TC Electronic Quintessence Harmonizer – Chicago Music Exchange