Jupiter XO 1240RL-T Bass Trombone Overview
The XO 1240RL-T is a professional bass trombone designed for players who need a full low-brass voice, independent valve flexibility, and an open valve response. Within XO's professional trombone line, this model combines a rose brass bell, open-wrap construction, and Thru-Flo valve design to serve orchestral, wind ensemble, brass ensemble, and commercial bass trombone work.
Jupiter XO 1240RL-T Bass Trombone Specifications
- Instrument Type: Bass Trombone
- Key: Bb/F/Gb/D
- Model: 1240RL-T
- Finish: Lacquer
- Bell Diameter: 9.5 inch rose brass bell
- Bore Size: .561 inch
- Valve System: Double independent inline Thru-Flo valves
- Handslide: Brass outer slide with nickel silver crook and chromed inner slide
- Case: XO Designer Series case
- Accessories: Mouthpiece, valve oil, slide cream, polish cloth, and three interchangeable leadpipes
- Serial number: EB08949
Condition & Setup
This demo model instrument is in excellent playing order. It has been professionally inspected, set up, and play-tested by The Mighty Quinn Brass and Winds so the slide action, valve function, and general response are prepared for a serious player. Cosmetically, the instrument presents very cleanly with a high-gloss lacquer finish and bright trim. The fitted hard case is clean and properly shaped for the instrument and handslide.
Who the 1240RL-T Bass Trombone Is For
The 1240RL-T is suited to advanced students, university players, professional bass trombonists, and low-brass doublers who want a modern independent-valve bass trombone with a broad tonal center. The rose brass bell supports a warm, substantial bass trombone sound, while the Thru-Flo valve system is intended for players who value an open feel through valve combinations. It is a strong fit for orchestral sections, wind ensemble work, pit orchestra playing, brass ensembles, and commercial settings where flexibility in the valve register matters.
Common Questions About the XO 1240RL-T
What interchangeable leadpipes are included with this trombone?
The 1240RL-T includes 3 leadpipes in total,. A Yellow Brass with Length of 260mm, a Yellow Brass with Length of 220mm and a Sterling Silver with Length or 220mm
What do Thru-Flo valves offer a bass trombonist?
Thru-Flo valves are designed to keep the air path more direct through the valve section. Bass trombonists often choose this style of valve for a freer response in the low register and in combined-valve passages.
Why choose the rose brass bell version?
The rose brass bell version is often chosen by players who want a warmer, broader tonal profile with a substantial core. It pairs well with the bass trombone's role in orchestral, wind ensemble, and section playing.
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 1240RL-T Professional Bass Trombone with Dual Thayer Valves
Jupiter XO 1240RL-T Bass Trombone Overview
The XO 1240RL-T is a professional bass trombone designed for players who need a full low-brass voice, independent valve flexibility, and an open valve response. Within XO's professional trombone line, this model combines a rose brass bell, open-wrap construction, and Thru-Flo valve design to serve orchestral, wind ensemble, brass ensemble, and commercial bass trombone work.
Jupiter XO 1240RL-T Bass Trombone Specifications
- Instrument Type: Bass Trombone
- Key: Bb/F/Gb/D
- Model: 1240RL-T
- Finish: Lacquer
- Bell Diameter: 9.5 inch rose brass bell
- Bore Size: .561 inch
- Valve System: Double independent inline Thru-Flo valves
- Handslide: Brass outer slide with nickel silver crook and chromed inner slide
- Case: XO Designer Series case
- Accessories: Mouthpiece, valve oil, slide cream, polish cloth, and three interchangeable leadpipes
- Serial number: EB08949
Condition & Setup
This demo model instrument is in excellent playing order. It has been professionally inspected, set up, and play-tested by The Mighty Quinn Brass and Winds so the slide action, valve function, and general response are prepared for a serious player. Cosmetically, the instrument presents very cleanly with a high-gloss lacquer finish and bright trim. The fitted hard case is clean and properly shaped for the instrument and handslide.
Who the 1240RL-T Bass Trombone Is For
The 1240RL-T is suited to advanced students, university players, professional bass trombonists, and low-brass doublers who want a modern independent-valve bass trombone with a broad tonal center. The rose brass bell supports a warm, substantial bass trombone sound, while the Thru-Flo valve system is intended for players who value an open feel through valve combinations. It is a strong fit for orchestral sections, wind ensemble work, pit orchestra playing, brass ensembles, and commercial settings where flexibility in the valve register matters.
Common Questions About the XO 1240RL-T
What interchangeable leadpipes are included with this trombone?
The 1240RL-T includes 3 leadpipes in total,. A Yellow Brass with Length of 260mm, a Yellow Brass with Length of 220mm and a Sterling Silver with Length or 220mm
What do Thru-Flo valves offer a bass trombonist?
Thru-Flo valves are designed to keep the air path more direct through the valve section. Bass trombonists often choose this style of valve for a freer response in the low register and in combined-valve passages.
Why choose the rose brass bell version?
The rose brass bell version is often chosen by players who want a warmer, broader tonal profile with a substantial core. It pairs well with the bass trombone's role in orchestral, wind ensemble, and section playing.
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 1240RL-T Professional Bass Trombone with Dual Thayer 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.