This Bach 50A3 Hagmann Independent Bass Trombone has been sold and now appears here as part of our Archive of Sold instruments.
It remains online as a reference for players, educators, and collectors researching Bach’s modern professional bass models.
✦ Historical Perspective
The Bach 50A3 represents one of Vincent Bach’s most versatile professional bass trombone configurations. Featuring an independent Hagmann valve set in Bb / F / Gb / D tuning, the design offers smooth airflow and consistent resistance across both valves. This setup provides bass trombonists with a complete chromatic low range and a remarkably even feel between open and engaged positions.
This particular example was pro-player owned and saw minimal use before being acquired by The Brass Exchange. The instrument paired a 9.5″ yellow-brass 50-series bell section with an upgraded Edwards straight-bore bass slide and one removable leadpipe. That combination delivered a broad, resonant core with excellent projection and clarity in both orchestral and chamber settings.
The Hagmann valve design, developed in Switzerland and adopted by Bach on select 50A3 models, is favored for its open, balanced airflow compared to traditional rotors or Thayer valves. Players appreciate its centered tone and reliability—qualities that helped establish the 50A3 as a trusted modern alternative to fully custom bass trombones.
Originally accompanied by its hard-shell Bach case, this instrument remained in immaculate condition throughout its time in service, requiring no repairs or cosmetic work. When new, the Bach 50A3 Hagmann retailed for over $6,000, underscoring its place among the company’s premium professional offerings.
✅ FAQs
When was the Bach 50A3 introduced?
The 50A3 configuration emerged in the 1990s as Bach’s response to growing demand for open-flow independent valve systems on large-bore bass trombones.
What makes the Hagmann valve unique?
Unlike standard rotary or Thayer valves, the Hagmann design uses a direct-flow layout that reduces bends and turbulence, giving a freer response and smoother slurs.
Is the Edwards slide original?
This example included an upgraded Edwards bass slide, straight-bore configuration, compatible with Bach 50-series bell sections. Many professional players pair these for improved slide alignment and articulation.
📌 Archive Reference
This Bach 50A3 Hagmann Independent Bass Trombone has been sold and remains displayed here as part of our historical archive for future reference.
Looking for a similar professional bass trombone? Browse available trombones 🔎 or complete our Trade-In Form ✍️ to upgrade your current setup.
