Used StageCraft Blues Jack 212 Studio Cabinet w/ Celestion G12K-85s – Flex Back Design

This is a StageCraft Blues Jack 212 Studio Cabinet, built for players who want boutique construction and tonal flexibility in one box. The “flex back” design lets you run it sealed for punch and tight low end, or open for airy projection — just pop off the rear panel. It’s loaded with a matched pair of Celestion G12K-85s, known for massive headroom, smooth highs, and thick, authoritative lows. Perfect whether you’re running clean tones, high-gain crunch, or anything in between. The cab is in super clean condition — no scuffs on the tolex, joints and corners are rock solid, and it’s ready for stage or studio use. Hand-built from void-free Baltic birch with box/finger joints (no MDF or particle board anywhere), this is a serious upgrade from mass-produced cabs. Highlights: StageCraft Blues Jack 212 Studio Cabinet (flex back: sealed or open) Loaded with 2x Celestion G12K-85s (8Ω each, wired to 4Ω total) Solid Baltic birch construction, finger-jointed shell Clean tolex with no scuffs, excellent overall condition Designed for power handling and versatility — tight and focused sealed, open and spacious with panel removed