Joseph L. Jefferson Small-Bore Trombone Mouthpiece – Commercial Command & Versatility
Inner Rim Diameter: 1.01" | Cup Depth: Bach 6.5-inspired | Throat: .263" |Unique Outer Sleeve Design.

Joseph L. Jefferson Signature is the ultimate tool for the modern commercial trombonist — crafted to deliver the flexibility, power, and precision needed to shine in studio sessions, big bands, shows, recordings, and live gigs. Designed in collaboration with Dr. Joseph L. Jefferson this mouthpiece embodies the demands of a working pro: lead with authority, blend seamlessly in sections, and handle everything from blistering technical lines to lush legato phrases with total confidence. The 1.01" inner rim provides a secure, comfortable feel that supports endurance and control across the full range. The uniquely designed cup and backbore ensure effortless playability — highs open up cleanly, lows stay full and dark, and mid-range sings with warmth and focus. The larger .263" throat adds serious airflow and projection, while the innovative outer sleeve is the game-changer: it enhances zip, core, and clarity — giving you sharper articulations, more bite on attacks, and a bolder, more defined sound that cuts through any mix.

Why commercial trombonists love the Jefferson Signature:

• Lead & blend mastery — Projects powerfully when you need to stand out, yet blends beautifully in sections — perfect for horn lines, solos, and ensemble work
• Total range control — Easy, consistent access from pedal tones to altissimo, with no drop-off in tone quality or response
• Crisp, clear articulation — The sleeve and larger throat deliver snappy attacks and clean slurs — essential for technical passages and commercial precision
• Enhanced core & zip — More body, edge, and excitement in your sound without sacrificing warmth or musicality
• Feedback & facility — Responsive feel gives you immediate connection to every note — ideal for both technical runs and expressive legato
• Premium stainless steel — Hypoallergenic, durable, and efficient — transfers every bit of your air into vibrant, consistent tone

Dr. Joseph L. Jefferson is a respected educator, performer, and jazz authority — his signature mouthpiece reflects that expertise: a commercial workhorse that makes playing feel effortless, sound incredible, and gives you the edge to lead, blend, and express at the highest level. Whether you're cutting tracks in the studio, swinging with a big band, or nailing a show, the Jefferson Signature is built to handle it all — with style, power, and total reliability. Play like a pro. Sound like a legend.