Professional-level Sound Made Accessible
Looking for a premium trombone with boutique appointments? That’s what you get with the XO 1236L-O. This tenor trombone comes with a highly responsive 2-piece yellow brass bell for robust projection. The professional-level large-bore design comes with a 0.563-inch F attachment bore and open-style wrap for reduced resistance. Players around Sweetwater find that this trombone's three interchangeable leadpipes let every player customize the instrument’s feel. Other top-level features include a reversed tuning slide, a gold-plated rotary valve, mechanical linkage, and expertly fit outer and inner slides. Your purchase includes a removable gold-plated balance, a mouthpiece, and a case. Choose the XO 1236L-O trombone for outstanding tone and playability.
2-piece yellow brass bell
A trombone’s bell is the heart and soul of the sound. XO knows this, which is why the company fitted this trombone with a 2-piece yellow brass bell. Flaring to an impressive 8.5 inches in diameter, the bell offers up a well-balanced tone with a lively response at louder dynamics. The expansive bell width also allows for a nuanced sound through all registers and dynamics. XO’s 2-piece design gives the trombone a controlled resonance and super-consistent sound. You’ll appreciate the 1236L-O’s superb sound from the moment you play your first notes.


Customize your playing experience with interchangeable leadpipes
XO is committed to delivering the best possible playing experience with each of its instruments. A trombone should feel like a perfectly natural extension of yourself, and breath resistance plays a major role in achieving that “perfect” feeling. The 1236L-O comes with three interchangeable leadpipes, so you can customize the horn to fit your unique tonal needs. What’s more, XO included a removable gold-plated counterweight to further customize the feel of your 1236L-O trombone.
XO brass meets the mark for today’s top players
The XO brand was born out of the vision of Koichi Haido, Chief Instrument Technician at the Global Corporation in Japan. Designed for today’s top players, XO brass instruments leverage the industry’s leading performance options. The company’s specially tailored features enhance the performer’s experience with incredible sound, clarity, and resonance, at all volumes, in all venues, and under any performance demand you may encounter. Each XO instrument is inspected for quality throughout the manufacturing process, ensuring it can endure bumps and bruises as easily as navigating challenging technical passages. Sweetwater strives to meet the demands of our professional-level customers, and XO instruments meet the mark.

XO 1236L-O Features:
- Professional-level tenor trombone
- Unique open wrap design and 0.563-in. attachment bore lessen resistance
- Symphonic-size 0.547-in. bore offers a free-blowing feel and focused tone
- 8.5-in., 2-piece yellow brass bell produces a warm, classic tone
- Expertly fit slide responds to your slightest touch
- Interchangeable leadpipes allow you to customize the horn’s response
- Tapered rotary valve and mechanical linkage deliver rock-solid triggering
- Detachable gold-plated counterweight enables the user to tailor the instrument’s balance
- Clear lacquer finish contributes a warm tonal quality
- Includes JBM-L65AL mouthpiece and Session-style case