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The Bach Stradivarius Model 50 is a professional single-rotor bass trombone from a series long respected by orchestral, wind ensemble, and low-brass players. Its broad tonal concept, centered response, and straightforward Bb/F configuration reflect the established Bach approach to professional bass trombone design. This particular instrument carries the Model 50 bell engraving and a traditional single-rotor attachment.
Bach Stradivarius Model 50 Bass Trombone Specifications
- Instrument Type: Bass trombone
- Key: Bb/F
- Model: Stradivarius Model 50
- Finish: Lacquer
- Bore Size: .562 in
- Bell Diameter: 9.5 in
- Bell Material: Yellow brass
- Case: Fitted hard case
- Serial Number: 70999
Condition & Setup
This pre-owned instrument is in excellent playing order and has been professionally serviced, set up, and play-tested. Cosmetic wear includes a small dent, scattered scratches and scuffs, marks inside the bell, and wear around the rotary-valve and attachment tubing. The fitted hard case is included; it has light exterior scuffs and edge wear.
Who the Model 50 Bass Trombone Is For
The Model 50 is suited to professional players, advanced students, educators, and collectors who prefer the direct response and reduced mechanical complexity of a single-valve bass trombone. Its large-bore design and 9.5-inch bell support the broad, substantial sound expected in orchestral, symphonic band, brass ensemble, and low-brass section work. Players who require the alternate low-register positions and chromatic flexibility of an independent double-valve instrument should consider another Model 50 configuration.
Common Questions About the Bach Model 50
How does a single-rotor Model 50 differ from a double-valve bass trombone?
The single F attachment offers a streamlined airflow path, lower mechanical weight, and a straightforward playing setup. A double-valve bass trombone provides additional low-register position options and greater chromatic flexibility.
What does the .562-inch bore contribute to the Model 50?
The .562-inch bore is a standard professional bass trombone dimension designed to accommodate substantial airflow and support a broad, centered low register.
Where does the Model 50 sit within the Bach trombone line?
The Model 50 belongs to Bach's professional Stradivarius bass trombone family. The series includes single-valve and double-valve configurations for players with different low-register and mechanical preferences.
We are proud to be an authorized Bach 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
Bach Stradivarius Model 50 Professional Bass Trombone in Lacquer SN 70999
Bach Stradivarius Model 50 Bass Trombone Overview
The Bach Stradivarius Model 50 is a professional single-rotor bass trombone from a series long respected by orchestral, wind ensemble, and low-brass players. Its broad tonal concept, centered response, and straightforward Bb/F configuration reflect the established Bach approach to professional bass trombone design. This particular instrument carries the Model 50 bell engraving and a traditional single-rotor attachment.
Bach Stradivarius Model 50 Bass Trombone Specifications
- Instrument Type: Bass trombone
- Key: Bb/F
- Model: Stradivarius Model 50
- Finish: Lacquer
- Bore Size: .562 in
- Bell Diameter: 9.5 in
- Bell Material: Yellow brass
- Case: Fitted hard case
- Serial Number: 70999
Condition & Setup
This pre-owned instrument is in excellent playing order and has been professionally serviced, set up, and play-tested. Cosmetic wear includes a small dent, scattered scratches and scuffs, marks inside the bell, and wear around the rotary-valve and attachment tubing. The fitted hard case is included; it has light exterior scuffs and edge wear.
Who the Model 50 Bass Trombone Is For
The Model 50 is suited to professional players, advanced students, educators, and collectors who prefer the direct response and reduced mechanical complexity of a single-valve bass trombone. Its large-bore design and 9.5-inch bell support the broad, substantial sound expected in orchestral, symphonic band, brass ensemble, and low-brass section work. Players who require the alternate low-register positions and chromatic flexibility of an independent double-valve instrument should consider another Model 50 configuration.
Common Questions About the Bach Model 50
How does a single-rotor Model 50 differ from a double-valve bass trombone?
The single F attachment offers a streamlined airflow path, lower mechanical weight, and a straightforward playing setup. A double-valve bass trombone provides additional low-register position options and greater chromatic flexibility.
What does the .562-inch bore contribute to the Model 50?
The .562-inch bore is a standard professional bass trombone dimension designed to accommodate substantial airflow and support a broad, centered low register.
Where does the Model 50 sit within the Bach trombone line?
The Model 50 belongs to Bach's professional Stradivarius bass trombone family. The series includes single-valve and double-valve configurations for players with different low-register and mechanical preferences.
We are proud to be an authorized Bach 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

Bach Stradivarius Model 50 Professional Bass Trombone in Lacquer SN 70999
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.
