This Bach 36BO trombone, approximately 10–15 years old, represents one of the most versatile and respected medium-bore professional models in the Bach lineup. It has had a full shop service, including a chemical bath, rotor service, and complete handslide adjustment and alignment. A single-owner horn, it has been sitting idle for the last decade with no prior damage or repairs — making it an exceptionally clean example.
The 36BO features the classic 8" yellow brass Bach 36 bell, paired with a standard weight .525 medium-bore handslide and an open-wrap F-attachment rotor valve. The open wrap provides a freer, more resonant blow compared to traditional closed-wrap designs, improving response and flexibility.
This instrument is an excellent choice for players seeking a horn that bridges the gap between small-bore jazz tenors and full .547 symphonic tenors. A 36BO can easily cover a wide range of playing contexts: concert band, orchestra pits, jazz ensembles, and even lighter symphonic repertoire. With the right mouthpiece, it can project with authority or play with subtle warmth, adapting to the player’s needs.
As of 2025, a brand new Bach 36BO sells for over $4,100. This pre-owned example offers the same professional playability, but at a much greater value.
Includes the original Bach brown zippered case in excellent condition. Mouthpiece not included.
FAQ 🤔
What makes the Bach 36BO different from the standard 36B?
The “O” stands for open wrap — the tubing around the valve is straighter and less restrictive than the closed-wrap 36B. This design provides a more open and resonant response, especially when the F-attachment is engaged.
Who is the Bach 36BO best suited for?
The 36BO is a favorite among advancing students, adult comeback players, and professionals who want a horn that plays bigger than a small bore but isn’t as demanding as a full .547 symphonic tenor. It’s versatile enough for jazz band, concert band, and pit orchestra work.
Is a .525 bore trombone too small for orchestra use?
Not at all. While .547 bore instruments (like the Bach 42) are the modern orchestral standard, many players — including Vincent Bach himself — believed that .525 was the optimal size for daily orchestra playing. The 36BO can still perform beautifully in a wide variety of ensemble settings.
How does the Bach 36BO compare to buying new?
New 36BO models often require time to break in and personal adjustment. A well-maintained pre-owned example like this one already has a “played-in” resonance, offering instant response and tonal richness — at thousands less than new factory pricing.
This Bach 36BO is now part of our Archive of Sold Instruments, presented here for historical and reference purposes.
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