Jupiter XO 1240L Bass Trombone Overview
The XO 1240L is a professional bass trombone designed for players who need the range, valve flexibility, and projection expected in serious ensemble work. Its independent double-valve layout gives bass trombonists the alternate positions and low-register facility required in orchestral, wind ensemble, jazz ensemble, and commercial settings. This instrument is offered in open-box condition with its fitted case, mouthpiece, maintenance items, and interchangeable leadpipes.
Jupiter XO 1240L Bass Trombone Specifications
- Instrument Type: Bass trombone
- Key: Bb/F/Gb/D
- Model: 1240L
- Finish: Lacquered brass
- Bore Size: 0.561 in
- Bell Diameter: 9.5 in
- Valve System: Double independent inline rotor system
- Case: XO Designer Series case
- Accessories: XO Large shank 5G mouthpiece, valve oil, cleaning cloth, extra leadpipes
- Serial Number: EB08177
Condition & Setup
This demo model instrument is in excellent playing order and has been professionally inspected, set up, and play-tested by The Mighty Quinn Brass and Winds. The finish presents very clean overall with a bright, reflective surface. Light fine scratches and handling marks are present on the receiver area near the model and serial engraving. Included components are cleanly organized in the fitted case, including the mouthpiece, Ultra Pure valve oil, Ultra Pure trombone slide lube, polishing cloth, and interchangeable leadpipes.
Who the 1240L Bass Trombone Is For
The 1240L is intended for advanced students, collegiate players, professional doublers, and working bass trombonists who want a modern professional instrument with independent valve options. Its 0.561 in bore, 9.5 in bell, open-wrap design, and interchangeable leadpipes place it squarely in the professional bass trombone category, where players evaluate response, valve register security, slide feel, and tonal flexibility across demanding ensemble literature.
Common Questions About the Jupiter XO 1240L
What does the independent double-valve system offer a bass trombonist?
An independent double-valve system allows either valve to be used separately or together, giving the player more alternate positions and greater flexibility in the low register than a single-valve bass trombone.
How does the 1240L fit within the XO trombone lineup?
The 1240L is part of XO's professional bass trombone line. It is built around a double independent inline rotor system, open wrap, 0.561 in bore, 9.5 in bell, and interchangeable leadpipes for players who need a full professional bass trombone setup.
Why are interchangeable leadpipes useful on a bass trombone?
Interchangeable leadpipes allow the player to adjust response, resistance, and articulation feel without changing the entire instrument. This is especially useful for bass trombonists who move between orchestral, wind ensemble, jazz, and commercial settings.
We are proud to be an authorized Jupiter XO dealer
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
Jupiter XO 1240L Professional Bass Trombone with Dual Independent Valves
Jupiter XO 1240L Bass Trombone Overview
The XO 1240L is a professional bass trombone designed for players who need the range, valve flexibility, and projection expected in serious ensemble work. Its independent double-valve layout gives bass trombonists the alternate positions and low-register facility required in orchestral, wind ensemble, jazz ensemble, and commercial settings. This instrument is offered in open-box condition with its fitted case, mouthpiece, maintenance items, and interchangeable leadpipes.
Jupiter XO 1240L Bass Trombone Specifications
- Instrument Type: Bass trombone
- Key: Bb/F/Gb/D
- Model: 1240L
- Finish: Lacquered brass
- Bore Size: 0.561 in
- Bell Diameter: 9.5 in
- Valve System: Double independent inline rotor system
- Case: XO Designer Series case
- Accessories: XO Large shank 5G mouthpiece, valve oil, cleaning cloth, extra leadpipes
- Serial Number: EB08177
Condition & Setup
This demo model instrument is in excellent playing order and has been professionally inspected, set up, and play-tested by The Mighty Quinn Brass and Winds. The finish presents very clean overall with a bright, reflective surface. Light fine scratches and handling marks are present on the receiver area near the model and serial engraving. Included components are cleanly organized in the fitted case, including the mouthpiece, Ultra Pure valve oil, Ultra Pure trombone slide lube, polishing cloth, and interchangeable leadpipes.
Who the 1240L Bass Trombone Is For
The 1240L is intended for advanced students, collegiate players, professional doublers, and working bass trombonists who want a modern professional instrument with independent valve options. Its 0.561 in bore, 9.5 in bell, open-wrap design, and interchangeable leadpipes place it squarely in the professional bass trombone category, where players evaluate response, valve register security, slide feel, and tonal flexibility across demanding ensemble literature.
Common Questions About the Jupiter XO 1240L
What does the independent double-valve system offer a bass trombonist?
An independent double-valve system allows either valve to be used separately or together, giving the player more alternate positions and greater flexibility in the low register than a single-valve bass trombone.
How does the 1240L fit within the XO trombone lineup?
The 1240L is part of XO's professional bass trombone line. It is built around a double independent inline rotor system, open wrap, 0.561 in bore, 9.5 in bell, and interchangeable leadpipes for players who need a full professional bass trombone setup.
Why are interchangeable leadpipes useful on a bass trombone?
Interchangeable leadpipes allow the player to adjust response, resistance, and articulation feel without changing the entire instrument. This is especially useful for bass trombonists who move between orchestral, wind ensemble, jazz, and commercial settings.
We are proud to be an authorized Jupiter XO dealer
Pairs well with
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
Jupiter XO 1240L Professional Bass Trombone with Dual Independent Valves
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders valued over $99 ship via FedEx 2-Day within the U.S. and via DHL internationally. A physical address (no P.O. Boxes) and signature are required. Smaller accessories ship via USPS (2–5 day service) and do not require a signature if valued under $99. Please see our FAQ for additional details.
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Return Policy
We offer an unconditional 30-day return policy to ensure you’re completely satisfied. If you’re unhappy for any reason, return the item for a full refund or full exchange credit (reeds and other consumables are non-returnable once opened). Every instrument we sell is guaranteed to be free of mechanical defects—if an issue arises, contact us and we’ll either reimburse a local repair or provide a prepaid return label for repair, exchange, or refund. If you simply change your mind, you may still return the item for a full refund, but return shipping costs are the customer’s responsibility unless free returns were purchased through Redo at checkout. Please see our FAQ for additional details.
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Shop Warranty:
Brand new items are covered by the full manufacturer’s warranty unless otherwise noted (see the individual maker for details). Open box/refurbished, used, and vintage items include a two-year warranty serviced by our in-house repair shop, and we guarantee every instrument will be free of mechanical defects. Warranty coverage does not include damage from accident, misuse, negligence, improper operation, unauthorized alterations or removed serial numbers, normal wear and routine maintenance, environmental damage (including perspiration, corrosion, or extreme temperature and humidity), lacquer or plating wear, or consumable parts such as springs, pads, and felts. Please see our FAQ for additional details.