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The William S. Haynes Amadeus AF670-S is a performance-level alto flute that brings the Haynes design approach to the lower G register. The straight-headjoint configuration provides a traditional transverse playing position for experienced alto flute players, while the Amadeus line is designed for serious ensemble, chamber, and doubling work. This model is a focused choice for musicians seeking an established alto flute design from Haynes.
William S. Haynes Amadeus AF670-S Alto Flute Specifications
- Instrument Type: Alto flute
- Key: G
- Model: Amadeus AF670-S
- Headjoint Style: Straight
- Headjoint Material: Solid silver
- Body and Mechanism: Silver-plated
- Keys: Closed-hole (plateau) keys, silver plated
- Case: Haynes-branded zippered case cover
- Accessories: Wooden cleaning rod, polish cloth, and cleaning cloth
Condition & Setup
This lightly used alto flute is in excellent playing order and has been professionally serviced, set up, and play tested. Its silver-plated exterior and keywork are bright and well maintained. Light fine surface marks are present on portions of the headjoint, consistent with careful handling and polishing.
Who the Amadeus AF670-S Alto Flute Is For
The AF670-S is suited to advanced flutists, professional doublers, educators, and ensemble players seeking the warm, broad tonal role associated with the alto flute. Its straight headjoint will be most comfortable for musicians who prefer a direct transverse layout and have the reach required for that configuration. It is well suited to flute choir, chamber music, studio work, and orchestral passages that call for the depth and color of the alto register.
Common Questions About the William S. Haynes AF670-S
How does the AF670-S differ from the AF670-C?
The AF670-S uses a straight solid silver headjoint, while the AF670-C uses a curved solid silver headjoint. The straight configuration offers a traditional transverse orientation, while the curved version reduces the required reach.
What is the purpose of the solid silver headjoint and silver-plated body?
The AF670-S places solid silver in the headjoint, the component most directly involved in response and tonal articulation, while using a silver-plated body and mechanism. This construction defines its position within the Amadeus performance line.
What musical settings suit this alto flute?
The AF670-S is designed for serious alto flute doubling, flute choir, chamber music, studio work, and orchestral color. Its lower G register expands the tonal range available to an experienced flutist.
We are proud to be an authorized Haynes dealer
In stock! Ships within 1-2 business days
Financing available. Apply directly at checkout
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
William S. Haynes AF670-S 'Amadeus' Alto Flute with Sterling Silver Straight Headjoint
William S. Haynes Amadeus AF670-S Alto Flute Overview
The William S. Haynes Amadeus AF670-S is a performance-level alto flute that brings the Haynes design approach to the lower G register. The straight-headjoint configuration provides a traditional transverse playing position for experienced alto flute players, while the Amadeus line is designed for serious ensemble, chamber, and doubling work. This model is a focused choice for musicians seeking an established alto flute design from Haynes.
William S. Haynes Amadeus AF670-S Alto Flute Specifications
- Instrument Type: Alto flute
- Key: G
- Model: Amadeus AF670-S
- Headjoint Style: Straight
- Headjoint Material: Solid silver
- Body and Mechanism: Silver-plated
- Keys: Closed-hole (plateau) keys, silver plated
- Case: Haynes-branded zippered case cover
- Accessories: Wooden cleaning rod, polish cloth, and cleaning cloth
Condition & Setup
This lightly used alto flute is in excellent playing order and has been professionally serviced, set up, and play tested. Its silver-plated exterior and keywork are bright and well maintained. Light fine surface marks are present on portions of the headjoint, consistent with careful handling and polishing.
Who the Amadeus AF670-S Alto Flute Is For
The AF670-S is suited to advanced flutists, professional doublers, educators, and ensemble players seeking the warm, broad tonal role associated with the alto flute. Its straight headjoint will be most comfortable for musicians who prefer a direct transverse layout and have the reach required for that configuration. It is well suited to flute choir, chamber music, studio work, and orchestral passages that call for the depth and color of the alto register.
Common Questions About the William S. Haynes AF670-S
How does the AF670-S differ from the AF670-C?
The AF670-S uses a straight solid silver headjoint, while the AF670-C uses a curved solid silver headjoint. The straight configuration offers a traditional transverse orientation, while the curved version reduces the required reach.
What is the purpose of the solid silver headjoint and silver-plated body?
The AF670-S places solid silver in the headjoint, the component most directly involved in response and tonal articulation, while using a silver-plated body and mechanism. This construction defines its position within the Amadeus performance line.
What musical settings suit this alto flute?
The AF670-S is designed for serious alto flute doubling, flute choir, chamber music, studio work, and orchestral color. Its lower G register expands the tonal range available to an experienced flutist.
We are proud to be an authorized Haynes dealer
Pairs well with
In stock! Ships within 1-2 business days
Financing available. Apply directly at checkout
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99

William S. Haynes AF670-S 'Amadeus' Alto Flute with Sterling Silver Straight Headjoint
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.

