Bach 42BO Stradivarius Step-Up Trombone F Rotor

Features:

Bach 42BO Stradivarius professional tenor trombone in Bb/F featuring a .547-inch large bore, hand-hammered one-piece yellow brass bell, and open-wrap F attachment. Includes Bach 6 1/2AL mouthpiece and case.

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The Bach 42BO Stradivarius is one of the most widely recognized professional tenor trombones in the world, trusted by advancing students, collegiate musicians, educators, and symphonic performers for its powerful sound and dependable response.

Built around a .547-inch large bore and an 8.5-inch one-piece hand-hammered yellow brass bell, the 42BO delivers a broad, resonant sound with excellent projection and tonal depth. Its balanced response allows players to move comfortably between solo, ensemble, and orchestral settings.

The open-wrap F attachment is designed with fewer and more gradual bends in the tubing than a traditional closed-wrap design. This promotes a more open feel when the trigger is engaged, helping maintain consistent response and tonal character throughout the instrument's range.

A traditional rotor valve provides reliable operation, while chrome-plated nickel silver inner slide tubes deliver smooth action and durability. Yellow brass outer slide tubes contribute warmth and resonance to the overall sound.

Known for its versatility and refined playing characteristics, the Bach 42BO continues to serve as a benchmark for professional large-bore tenor trombones.

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Why We Recommend It

The 42BO has earned its reputation through decades of use in schools, universities, and professional ensembles. Its combination of a large-bore design, open-wrap F attachment, and rich Stradivarius tone make it an excellent choice for players seeking a versatile trombone capable of handling a wide range of musical demands.

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Features

• Bach 42BO Stradivarius professional tenor trombone
• Key of Bb with F attachment
• .547-inch large bore
• 8.5-inch one-piece hand-hammered yellow brass bell
• Open-wrap F attachment
• Traditional rotor valve
• Chrome-plated nickel silver inner slide tubes
• Yellow brass outer slide tubes
• Clear lacquer finish
• Broad, resonant symphonic sound
• Includes Bach 6 1/2AL large-shank mouthpiece
• Includes case

Model:	42BO
Manufacturer:	Bach