This Bach 36BO (SN 191669) is a medium-bore (.525) open-wrap F-attachment tenor trombone built in the mid-2000s, representing a period in which Bach Stradivarius instruments were transitioning through Conn-Selmer’s modernized production environment. This example is one of the stronger instruments from that era — clean, well-aligned, and fully optimized — and now lives in our Historical Archive as a reference for players researching 36-series evolution.
Freshly serviced in our shop prior to sale, the instrument arrived in excellent cosmetic and mechanical condition and was brought to full performance readiness through our standard professional setup, chemical cleaning, and slide/valve optimization.
✦ Bach in the 2000s — Historical Context
The early-to-mid 2000s were a transitional manufacturing period for Bach trombones, with some variability in factory alignment, solder work, and slide fit. This 36BO received a complete professional optimization at The Brass Exchange including slide alignment, hand fitting at the stockings, rotary valve refit, and full mechanical inspection. Once brought into spec, the horn played with the trademark clarity and centered resonance players expect from a properly sorted 36-series tenor.
We thoroughly play-tested this example and can confidently say it performs at a level comparable to the strongest 36BOs from any decade.
✦ Condition & Specifications
Bell: 8" one-piece yellow-brass bell, classic Bach taper
Bore: .525 medium-large
Valve: Standard rotary F-attachment, open-wrap design
Slide: Standard-weight with nickel-silver outer tubes / brass inner tubes
Finish: Original lacquer, polished and clean
Case: Original Bach brown coffin-style case (good condition; one plastic foot missing)
Mouthpiece: Not included
This trombone underwent a full chem-clean, dent removal (minimal), slide alignment, and valve servicing. No prior structural repairs. Only light cosmetic wear consistent with careful adult ownership.
✦ Playability & Feel
The Bach 36BO is known for bridging the gap between small-bore jazz horns and large symphonic tenors. It offers warmth, projection, and flexibility, while the open-wrap design provides a freer, smoother low register. This particular example played with a centered core, even articulation, and an open upper register — the hallmark qualities players seek in a top-tier 36BO.
✦ Who the 36BO Serves
This model appeals to a wide range of musicians, including:
Advancing students stepping up from a straight tenor
Doublers needing a versatile F-attachment horn for commercial or pit work
Orchestral players wanting a medium-bore option for chamber or lighter symphonic repertoire
Educators and freelancers needing a reliable, all-purpose tenor for variable settings
The optimized slide, efficient valve, and balanced tonal profile make it suitable for nearly any genre.
✦ Value Context
New Bach Stradivarius 36BO models retail above $4,300 (2025 pricing). “Open-box” or “B-stock” listings — often demo units or finish-blem instruments — commonly appear around $3,300, though quality varies depending on factory setup.
For players researching the differences, we maintain a detailed guide explaining how open-box, demo, and factory-second brass instruments are classified by major retailers.
👉 Read our guide: Understanding Open-Box, Demo & B-Stock Brass
✅ FAQs
Q: Are all 36BO models from the 2000s this consistent?
A: No. Alignment varied during that era. This example was professionally optimized in our shop and plays every bit as well as the strongest 36s from any decade.
Q: Recommended mouthpiece pairings?
A: A Bach 5G / 5GS offers a broad orchestral tone. A 6½AL gives more compact brilliance for commercial or lighter ensemble work.
Q: Case & mouthpiece included?
A: Original Bach brown coffin-style case included; mouthpiece not included.
Q: Difference vs. 36BO-LT?
A: The LT’s lightweight slide feels faster and a touch brighter. This standard-weight 36BO offers more tonal focus and stability — excellent as an all-around performer.
📌 Archive Reference & Next Steps
This Bach 36BO has been sold and is preserved here as part of The Brass Exchange Historical Archive for musicians and collectors researching Bach’s 36-series development.
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