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The Conn 36H Symphony is a professional Eb/Bb alto trombone built for players who need the compact response and centered color of an alto trombone with the added flexibility of a Bb attachment. Conn has long been a respected name in orchestral brass, and the 36H occupies a specialized place in the lineup for advanced trombonists, orchestral players, and serious students working on alto trombone literature.
Conn 36H Alto Trombone Specifications
- Instrument Type: Alto trombone with Bb attachment
- Key: Eb/Bb
- Model: 36H Symphony
- Bore Size: .491/.500 inch dual bore
- Bell Diameter: 7 inches
- Bell Material: Yellow brass
- Finish: Clear lacquer
- Accessories: Small-shank mouthpiece, valve oil, and slide cream
- Serial Number: 610956
Condition & Setup
This used instrument is in excellent playing order and has been professionally serviced, set up, and play-tested by The Mighty Quinn Brass and Winds. The lacquer presents well overall with light surface scratches and scuffs consistent with normal use. The single rotary valve and Bb trigger configuration are present, giving the player the additional facility expected from the 36H design.
Who the 36H Alto Trombone Is For
The Conn 36H is best suited for advanced students, teachers, orchestral trombonists, and serious ensemble players who need a true alto trombone concept rather than simply a smaller tenor trombone feel. Its Eb/Bb configuration is especially useful for players covering classical and orchestral alto trombone repertoire where secure upper-register response, compact slide positions, and clear articulation are important.
Common Questions About the Conn 36H
How does the Conn 36H differ from the Conn 34H alto trombone?
The Conn 36H adds a Bb attachment to the Eb alto trombone design, while the Conn 34H is the straight Eb version. The attachment gives the player alternate positions and added flexibility in passages where technical facility and slide reach matter.
What kind of player benefits most from an Eb/Bb alto trombone?
An Eb/Bb alto trombone is most useful for trombonists working in orchestral, chamber, and advanced ensemble settings where alto trombone parts are expected to have a distinct, compact tonal identity and precise response.
What does the .491/.500 dual bore contribute to the playing experience?
The .491/.500 dual bore design gives the 36H a focused alto trombone feel while allowing a touch of breadth through the slide. Players coming from tenor trombone often appreciate that balance when developing an alto concept.
We are proud to be an authorized C.G. Conn 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
C.G. Conn 36H 'Symphony' Professional Eb/Bb Alto Trombone in Lacquer
Conn 36H Alto Trombone Overview
The Conn 36H Symphony is a professional Eb/Bb alto trombone built for players who need the compact response and centered color of an alto trombone with the added flexibility of a Bb attachment. Conn has long been a respected name in orchestral brass, and the 36H occupies a specialized place in the lineup for advanced trombonists, orchestral players, and serious students working on alto trombone literature.
Conn 36H Alto Trombone Specifications
- Instrument Type: Alto trombone with Bb attachment
- Key: Eb/Bb
- Model: 36H Symphony
- Bore Size: .491/.500 inch dual bore
- Bell Diameter: 7 inches
- Bell Material: Yellow brass
- Finish: Clear lacquer
- Accessories: Small-shank mouthpiece, valve oil, and slide cream
- Serial Number: 610956
Condition & Setup
This used instrument is in excellent playing order and has been professionally serviced, set up, and play-tested by The Mighty Quinn Brass and Winds. The lacquer presents well overall with light surface scratches and scuffs consistent with normal use. The single rotary valve and Bb trigger configuration are present, giving the player the additional facility expected from the 36H design.
Who the 36H Alto Trombone Is For
The Conn 36H is best suited for advanced students, teachers, orchestral trombonists, and serious ensemble players who need a true alto trombone concept rather than simply a smaller tenor trombone feel. Its Eb/Bb configuration is especially useful for players covering classical and orchestral alto trombone repertoire where secure upper-register response, compact slide positions, and clear articulation are important.
Common Questions About the Conn 36H
How does the Conn 36H differ from the Conn 34H alto trombone?
The Conn 36H adds a Bb attachment to the Eb alto trombone design, while the Conn 34H is the straight Eb version. The attachment gives the player alternate positions and added flexibility in passages where technical facility and slide reach matter.
What kind of player benefits most from an Eb/Bb alto trombone?
An Eb/Bb alto trombone is most useful for trombonists working in orchestral, chamber, and advanced ensemble settings where alto trombone parts are expected to have a distinct, compact tonal identity and precise response.
What does the .491/.500 dual bore contribute to the playing experience?
The .491/.500 dual bore design gives the 36H a focused alto trombone feel while allowing a touch of breadth through the slide. Players coming from tenor trombone often appreciate that balance when developing an alto concept.
We are proud to be an authorized C.G. Conn 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

C.G. Conn 36H 'Symphony' Professional Eb/Bb Alto Trombone 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.
