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The Yamaha YSL-671 Eb alto trombone is a compact orchestral trombone model for players who need the lighter response and higher tessitura of the alto trombone in classical repertoire. This particular instrument is notable for its custom added Bb trigger, a practical modification for players who want additional position options while retaining the alto trombone concept.
Yamaha YSL-671 Alto Trombone Specifications
- Instrument Type: Eb alto trombone
- Model: YSL-671
- Configuration: Custom added Bb trigger/valve
- Finish: Lacquered brass
- Bell Material: Yellow brass
- Mouthpiece Shank: Small shank
- Case: Included
- Accessories: Mouthpiece with Protec carrying bag
- Serial Number: 001674
Condition & Setup
This instrument is in excellent playing order after professional service, setup, and play testing by The Mighty Quinn Brass and Winds. It is a pre-owned instrument with cosmetic wear, including surface scratches, scuffs, lacquer wear, and areas of tarnish, oxidation, and discoloration. The custom Bb trigger/valve hardware is part of the instrument and should be considered an important modification to the original alto trombone configuration.
Who the YSL-671 Alto Trombone Is For
The YSL-671 is for orchestral trombonists, advanced students, teachers, and doublers who use alto trombone for classical repertoire and want an Eb alto with a Bb trigger option. It will make the most sense for a player who already understands alto trombone intonation, slide positions, and the different response expectations of the smaller instrument.
Common Questions About the Yamaha YSL-671
What does the custom Bb trigger change on an Eb alto trombone?
A Bb trigger gives the player an added valve option for alternate positions and certain lower-register passages. On an alto trombone, that can be useful for players who want more flexibility than a straight Eb instrument.
Is the YSL-671 suited to orchestral alto trombone work?
The YSL-671 is an Eb alto trombone, the alto configuration most commonly associated with orchestral trombone literature. It is intended for players who need a focused alto voice rather than a tenor trombone substitute.
Who should consider an alto trombone with a trigger instead of a straight alto?
A trigger alto is best for a player who values alternate positions and added flexibility, while accepting the additional weight and complexity of a valve mechanism.
We are proud to be an authorized Yamaha 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
Yamaha YSL-671 Eb Alto Trombone with Custom Bb Trigger in Lacquer
Yamaha YSL-671 Alto Trombone Overview
The Yamaha YSL-671 Eb alto trombone is a compact orchestral trombone model for players who need the lighter response and higher tessitura of the alto trombone in classical repertoire. This particular instrument is notable for its custom added Bb trigger, a practical modification for players who want additional position options while retaining the alto trombone concept.
Yamaha YSL-671 Alto Trombone Specifications
- Instrument Type: Eb alto trombone
- Model: YSL-671
- Configuration: Custom added Bb trigger/valve
- Finish: Lacquered brass
- Bell Material: Yellow brass
- Mouthpiece Shank: Small shank
- Case: Included
- Accessories: Mouthpiece with Protec carrying bag
- Serial Number: 001674
Condition & Setup
This instrument is in excellent playing order after professional service, setup, and play testing by The Mighty Quinn Brass and Winds. It is a pre-owned instrument with cosmetic wear, including surface scratches, scuffs, lacquer wear, and areas of tarnish, oxidation, and discoloration. The custom Bb trigger/valve hardware is part of the instrument and should be considered an important modification to the original alto trombone configuration.
Who the YSL-671 Alto Trombone Is For
The YSL-671 is for orchestral trombonists, advanced students, teachers, and doublers who use alto trombone for classical repertoire and want an Eb alto with a Bb trigger option. It will make the most sense for a player who already understands alto trombone intonation, slide positions, and the different response expectations of the smaller instrument.
Common Questions About the Yamaha YSL-671
What does the custom Bb trigger change on an Eb alto trombone?
A Bb trigger gives the player an added valve option for alternate positions and certain lower-register passages. On an alto trombone, that can be useful for players who want more flexibility than a straight Eb instrument.
Is the YSL-671 suited to orchestral alto trombone work?
The YSL-671 is an Eb alto trombone, the alto configuration most commonly associated with orchestral trombone literature. It is intended for players who need a focused alto voice rather than a tenor trombone substitute.
Who should consider an alto trombone with a trigger instead of a straight alto?
A trigger alto is best for a player who values alternate positions and added flexibility, while accepting the additional weight and complexity of a valve mechanism.
We are proud to be an authorized Yamaha 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

Yamaha YSL-671 Eb Alto Trombone with Custom Bb Trigger in Lacquer
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.
