Used Keeley Bubble Tron Effect Pedal

Used Keeley Bubble Tron in good condition delivers dynamic, envelope-controlled filter and flanger effects inspired by Frank Zappa’s modular sounds. This versatile pedal features Random Stepped Filter, Auto Wah, and Flanger modes with responsive envelope triggering. Designed for expressive playing, it includes controls for Rate, Depth, Shape, and Sensitivity. True bypass switching ensures tonal integrity when off. Compact, durable, and packed with analog-style tone shaping, it’s a creative tool for adventurous guitarists.