Used Bk Butler TUBE DRIVER REISSUE W/BIAS KNOB Effect Pedal

Used BK Butler Tube Driver Reissue with Bias Knob in great condition, delivering classic tube-driven warmth and smooth, singing overdrive for guitar or bass. Features an onboard real vacuum tube, adjustable bias control for fine-tuning feel and harmonics, and straightforward Drive, Level, and Tone-style shaping for everything from edge-of-breakup grit to rich lead sustain. Standard 1/4" input/output jacks and rugged pedal format make it a dependable studio or stage tone enhancer.