XO Brass 1240L-T Professional Bass Trombone

Get Enhanced Playability And Tone With The XO Brass 1240L-T Professional Bass Trombone

The commanding power of this independent system, dual Thru-Flo™ valve model is prominent each time you perform. A large .571" bore bass trombone with 9.5" handcrafted bell creates a solid presence while still maintaining dynamic sensitivity and focus. A choice of either yellow brass or rose brass is available. Both bell options include soldered, oversized bell wire for increased sustain and sonic brilliance. The Thru-Flo valves provide unrestricted airflow and enhanced tonal clarity while offering superb intonation. The precision hand slide with brass outer tubes and chromed nickel inner tubes are hand-finished to ensure the smoothest possible operation. One sterling silver and two brass interchange-able mouthpipes allow the artist to custom tailor the XO Trombone's air column for the desired response.

• Beautifully engraved, hand-hammered 9.5” yellow brass bell
• Crafted with a soldered bell flare wire for increased resonance and brilliance
• Double independent Inline Thru-Flo axial flow valve with mini-ball mechanical linkage
• Ensures quiet and responsive rotor operation
• Includes three interchangeable leadpipes
• Providing the player a more customized sound and feel with a personally controlled airflow making the most demanding passages easier to execute

SPECIFICATIONS

• Key: Bb/F/Gb/D
• Body Material: Lacquered Yellow Brass
• Bore: .571?
• Bell: 9.5? Hand-Crafted Yellow Brass
• Wrap: Open
• Outer Slide: Brass w/ Nickel Crook
• Rotary Valves: Independent Dual Thru-Flo
• Case: XO Professional Classic-Style Case

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.