Guitar Pedal X - GPX Blog - Pigtronix's 80's-inspired Star Eater Fuzz and Gloamer Volume Swell make for a Striking Pair
Amazon.com: TC Electronic CRESCENDO AUTO SWELL Responsive Crescendo Pedal with 2-Knob Interface for Haunting Guitar Line Manipulation : Musical Instruments
TC Electronic Crescendo Auto Swell Pedal | Sweetwater
TC Electronic Crescendo Auto Swell Pedal | Sweetwater