Used Keeley BUBBLE TRON Effect Pedal

Add funky, vowel-like filter sweeps to your tone with this used Keeley BUBBLE TRON in good condition. Designed for expressive auto-wah and envelope filter textures, it responds dynamically to your pick attack for everything from subtle quack to deep, synthy pulses. Simple controls make it easy to dial in sensitivity and filter character fast. Standard 1/4" input/output connections with rugged stompbox construction, ideal for guitar or bass players chasing classic funk and modern groove sounds.