Overview
This is a used Bach 42AF large bore tenor trombone in super mint condition, built within the past five years and played for only about one. It features a .547" bore, 8.5" yellow brass 42-series bell, and a standard 42 handslide paired with the renowned O.E. Thayer axial flow valve.
The open, efficient response of this valve design has made it one of the most sought-after alternatives to traditional rotary valves, offering smoother airflow and more consistent transitions when engaging the F-attachment.
This instrument has been fully cleaned and professionally serviced and requires no additional work — it is completely performance-ready. The slide is fast, straight, and tension-free, and the valve is quick and airtight.
From a playing standpoint, this particular 42AF delivers excellent clarity, breadth, and stability across all registers, making it a strong choice for orchestral, wind ensemble, and solo settings.
Condition & Player Perspective
Cosmetically, the trombone shows minimal—if any—signs of use. The lacquer remains bright and even throughout, and the handgrip area shows virtually no wear.
This example represents what many players are looking for in the used trombone market:
- Proven performance (no “new horn uncertainty”)
- Professional setup and service
- Immediate playability out of the case
The instrument includes its original Bach case in excellent condition, along with a mouthpiece of your choice (please call or email to discuss available options).
At the time of listing, new Bach 42AF models were retailing well above $3,800. This instrument offered a comparable experience with the added benefit of having already been tested, played, and fully dialed in.
❓ Questions Trombone Players Often Ask
Why choose a Bach 42AF with O.E. Thayer valve?
Many players prefer the O.E. Thayer axial flow valve for its smooth, open response and consistent feel when transitioning in and out of the F-attachment. Compared to traditional rotary valves, it offers a more direct airflow path and a stable, centered tone.
Is buying a used Bach 42AF a good option?
Yes. A well-maintained, professionally serviced example can offer excellent value and performance, often with more predictable playability than a brand-new instrument.
What should you look for in used trombones like this?
Slide condition, valve performance, and overall service history are key. Instruments that have been cleaned, aligned, and inspected by a professional shop typically perform at a much higher level.
🔧 Availability & Archive Status
This Bach 42AF has found a new home and now remains here as a reference for players researching used trombones and professional Bach models.
🔎 Explore & Next Steps
👉 Browse current used trombones and Bach models available now:
https://www.thebrass-exchange.com/trombones
📌 Considering selling or trading your trombone? Contact us for a valuation and explore your options ✍️
