Used Source Audio SA143 Soundblox Pro Bass Envelope Filter Bass Effect Pedal

Dial in funky, expressive tones with this used Source Audio SA143 Soundblox Pro Bass Envelope Filter in great condition. Designed for bass, it delivers smooth auto-wah and filter sweeps with deep control over sensitivity, range, and filter direction, plus multiple filter voices for everything from subtle warmth to synthy quack. Rugged, gig-ready stompbox with standard 1/4" input/output connections and straightforward, stage-friendly controls for fast setup and reliable performance.