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The Yamaha YCL-631II alto clarinet is a professional alto clarinet designed for ensemble, clarinet choir, and occasional orchestral use. It is built to deliver the centered, full alto clarinet sound advanced players need, with stable intonation and a response suited to serious section and doubling work. This instrument isoffered by an authorized Yamaha dealer and includes the original essential accessories for immediate use.
Yamaha YCL-631II Alto Clarinet Specifications
- Key: Eb
- Model: YCL-631II
- Instrument Type: Alto Clarinet
- Level: Professional
- Body Material: Grenadilla wood
- Finish: Silver-plated keywork
- Neck: Metal neck
- Case: Yamaha alto clarinet case
- Accessories: Mouthpiece, ligature, mouthpiece cap, cork grease, strap
Condition & Setup
This instrument is in outstanding condition with very limited prior playing time. It has been professionally serviced, set up, and play-tested to confirm proper function, pad seal, key regulation, and overall performance.
Who the YCL-631II Alto Clarinet Is For
The Yamaha YCL-631II alto clarinet is a professional Eb alto clarinet for advanced players who need reliable intonation, a focused ensemble sound, and consistent response across the range. It is well suited to band programs, clarinet choirs, pit and doubling work, and select orchestral repertoire where alto clarinet is required.
Within its category, the YCL-631II is known for providing the round, centered tone expected of a professional alto clarinet while maintaining the pitch stability needed in section playing. It is a strong choice for serious woodwind doublers, educators, conservatory players, and institutions seeking a dependable professional Yamaha alto clarinet.
Common Questions About The Yamaha YCL-631II
What is the Yamaha YCL-631II?
The Yamaha YCL-631II is a professional Eb alto clarinet made for advanced ensemble performance, including concert band, clarinet choir, and occasional orchestral use.
Is the Yamaha YCL-631II suitable for professional use?
Yes. The YCL-631II is a professional model designed for players who need dependable intonation, even response, and a tonal profile that blends well in larger woodwind sections.
What comes with this Yamaha YCL-631II alto clarinet?
This instrument includes a mouthpiece, ligature, mouthpiece cap, cork grease, strap, and case.
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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 Model YCL-631II Professional Alto Clarinet SN 33358
Yamaha YCL-631II Alto Clarinet Overview
The Yamaha YCL-631II alto clarinet is a professional alto clarinet designed for ensemble, clarinet choir, and occasional orchestral use. It is built to deliver the centered, full alto clarinet sound advanced players need, with stable intonation and a response suited to serious section and doubling work. This instrument isoffered by an authorized Yamaha dealer and includes the original essential accessories for immediate use.
Yamaha YCL-631II Alto Clarinet Specifications
- Key: Eb
- Model: YCL-631II
- Instrument Type: Alto Clarinet
- Level: Professional
- Body Material: Grenadilla wood
- Finish: Silver-plated keywork
- Neck: Metal neck
- Case: Yamaha alto clarinet case
- Accessories: Mouthpiece, ligature, mouthpiece cap, cork grease, strap
Condition & Setup
This instrument is in outstanding condition with very limited prior playing time. It has been professionally serviced, set up, and play-tested to confirm proper function, pad seal, key regulation, and overall performance.
Who the YCL-631II Alto Clarinet Is For
The Yamaha YCL-631II alto clarinet is a professional Eb alto clarinet for advanced players who need reliable intonation, a focused ensemble sound, and consistent response across the range. It is well suited to band programs, clarinet choirs, pit and doubling work, and select orchestral repertoire where alto clarinet is required.
Within its category, the YCL-631II is known for providing the round, centered tone expected of a professional alto clarinet while maintaining the pitch stability needed in section playing. It is a strong choice for serious woodwind doublers, educators, conservatory players, and institutions seeking a dependable professional Yamaha alto clarinet.
Common Questions About The Yamaha YCL-631II
What is the Yamaha YCL-631II?
The Yamaha YCL-631II is a professional Eb alto clarinet made for advanced ensemble performance, including concert band, clarinet choir, and occasional orchestral use.
Is the Yamaha YCL-631II suitable for professional use?
Yes. The YCL-631II is a professional model designed for players who need dependable intonation, even response, and a tonal profile that blends well in larger woodwind sections.
What comes with this Yamaha YCL-631II alto clarinet?
This instrument includes a mouthpiece, ligature, mouthpiece cap, cork grease, strap, and case.
![]()
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 Model YCL-631II Professional Alto Clarinet SN 33358
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, 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.
