The S.E. Shires Model Q39GR Q-Series Contrabass Trombone is a modern, American-tuned contrabass trombone designed to deliver breadth, clarity, and responsive control across the full register. Built around an independent F/C/Db/A valve system with Rotax rotary valves, the Q39GR offers stable intonation and fluid transitions while keeping the valve layout familiar to bass trombonists. A .590 inch bore and a 10.5 inch two-piece gold brass detachable-flare bell support a broad, resonant sound with depth and presence, finished in clear lacquer and supplied with a factory S.E. Shires case, mouthpiece, and care kit.

• Key: F/C/Db/A (independent), American tuning
• Bore: .590 inch
• Valves: Rotax rotary valves
• Bell: 10.5 inch, two-piece gold brass, detachable flare, soldered bead 
• Finish: Clear lacquer
• Case: S.E. Shires case