SNAMM '17 - Mad Professor Dual Blue Delay Demo Shawn HammondJuly 28, 2017VideoFinnish pedal guru Harri Koski shows off a deceptively simple stompbox with both a Binson Echorec-ish-voiced short digital delay and a pristine-voiced longer delay.whats-newvideossnamm-2017mad-professorgear-show-demodelayeffectsgearGearEffectsVideosNAMMReviews