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The Bach 42BO Stradivarius professional tenor trombone is a large-bore F-attachment tenor trombone designed for symphonic and solo performance. It features an 8.5-inch one-piece hand-hammered yellow brass bell, a .547-inch large bore, and a traditional wrap F attachment with standard rotary valve. This configuration is known for clear projection, centered response, and a balanced degree of resistance that many advanced players prefer in orchestral settings. The clear lacquer finish adds subtle warmth to the sound, and the chrome-plated nickel silver inner slide tubes support smooth, quick handslide action.
Bach 42BO Tenor Trombone Specifications
- Key: Bb/F
- Finish: Clear lacquer
- Bell Size: 8.5 inches
- Bell Material: One-piece hand-hammered yellow brass
- Bore Size: .547 inch
- Slide: Standard yellow brass slide with chrome-plated nickel silver inner handslide tubes
- Valve: Standard rotary valve
- Case: Original Bach case included
- Accessories: Slide cream, large shank 6.5AL mouthpiece, cleaning rod
Condition & Setup
This instrument was purchased directly from the manufacturer and has seen only extremely light use as a demo or display model. It has just been professionally serviced in our shop, set up, and play-tested. It is in superb condition and includes the original case and original manufacturer's accessories.
Who the 42BO Tenor Trombone Is For
The Bach 42BO tenor trombone is a professional large-bore Bb/F tenor trombone built for players who need a traditional orchestral sound and dependable F-attachment performance. It is well suited to advanced students, conservatory players, working professionals, and serious amateurs seeking an instrument for symphonic literature, large ensemble playing, and solo repertoire.
Within the professional tenor trombone category, the 42BO is distinguished by its combination of a one-piece yellow brass bell, .547 bore, and traditional wrap F attachment. Players can expect a broad, focused sound with strong projection, clear articulation, and smooth slide action. It is an appropriate choice for musicians who want a Bach symphonic setup with familiar resistance and tonal warmth in a lacquer finish.
Common Questions About The Bach 42BO
What is the Bach 42BO?
The Bach 42BO is a professional Bb/F tenor trombone with a .547-inch large bore, 8.5-inch yellow brass bell, and traditional wrap F attachment. It is designed primarily for symphonic and solo playing.
Is the Bach 42BO suitable for professional use?
Yes. The Bach 42BO Stradivarius is a professional-model tenor trombone commonly used by advanced students, conservatory players, and professional trombonists who need a full orchestral sound and reliable F-attachment response.
What comes with this Bach 42BO?
This instrument includes the original case and original manufacturer's accessories, including slide cream and a large shank 6.5AL mouthpiece. It has also been professionally serviced, set up, and play-tested in our shop.
We are proud to be an authorized Bach 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
Bach Model 42BO Stradivarius Professional Tenor Trombone
Bach 42BO Tenor Trombone Overview
The Bach 42BO Stradivarius professional tenor trombone is a large-bore F-attachment tenor trombone designed for symphonic and solo performance. It features an 8.5-inch one-piece hand-hammered yellow brass bell, a .547-inch large bore, and a traditional wrap F attachment with standard rotary valve. This configuration is known for clear projection, centered response, and a balanced degree of resistance that many advanced players prefer in orchestral settings. The clear lacquer finish adds subtle warmth to the sound, and the chrome-plated nickel silver inner slide tubes support smooth, quick handslide action.
Bach 42BO Tenor Trombone Specifications
- Key: Bb/F
- Finish: Clear lacquer
- Bell Size: 8.5 inches
- Bell Material: One-piece hand-hammered yellow brass
- Bore Size: .547 inch
- Slide: Standard yellow brass slide with chrome-plated nickel silver inner handslide tubes
- Valve: Standard rotary valve
- Case: Original Bach case included
- Accessories: Slide cream, large shank 6.5AL mouthpiece, cleaning rod
Condition & Setup
This instrument was purchased directly from the manufacturer and has seen only extremely light use as a demo or display model. It has just been professionally serviced in our shop, set up, and play-tested. It is in superb condition and includes the original case and original manufacturer's accessories.
Who the 42BO Tenor Trombone Is For
The Bach 42BO tenor trombone is a professional large-bore Bb/F tenor trombone built for players who need a traditional orchestral sound and dependable F-attachment performance. It is well suited to advanced students, conservatory players, working professionals, and serious amateurs seeking an instrument for symphonic literature, large ensemble playing, and solo repertoire.
Within the professional tenor trombone category, the 42BO is distinguished by its combination of a one-piece yellow brass bell, .547 bore, and traditional wrap F attachment. Players can expect a broad, focused sound with strong projection, clear articulation, and smooth slide action. It is an appropriate choice for musicians who want a Bach symphonic setup with familiar resistance and tonal warmth in a lacquer finish.
Common Questions About The Bach 42BO
What is the Bach 42BO?
The Bach 42BO is a professional Bb/F tenor trombone with a .547-inch large bore, 8.5-inch yellow brass bell, and traditional wrap F attachment. It is designed primarily for symphonic and solo playing.
Is the Bach 42BO suitable for professional use?
Yes. The Bach 42BO Stradivarius is a professional-model tenor trombone commonly used by advanced students, conservatory players, and professional trombonists who need a full orchestral sound and reliable F-attachment response.
What comes with this Bach 42BO?
This instrument includes the original case and original manufacturer's accessories, including slide cream and a large shank 6.5AL mouthpiece. It has also been professionally serviced, set up, and play-tested in our shop.
We are proud to be an authorized Bach 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

Bach Model 42BO Stradivarius Professional Tenor Trombone
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.
