Vincent Bach 50AF3 double rotor bass trombone

The Bach Stradivarius 50AF3 is a double rotor bass trombone with open wrap F and G-flat attachments which can be accessed independently using two ‘Infinity’ axial-flow* valves.

• Lacquer finish
• Bore size: 0.562 in. (14.27 mm)
• Key of B-flat/F/G-flat
• 9½-inch yellow brass bell
• Double in-line independent ‘Infinity’ axial-flow* valves
• Open wrap
• Yellow brass outer slide
• Bach 1½G mouthpiece
• Woodshell case

Also available in the Bach 50B3 range:

Other model variant: ^†LT50A3LG

* The Hagmann free-flow valve appeared in the early 1990s as a further development away from the traditional rotary valve, following the introduction of the more complex Thayer axial-flow valve in the 1980s. The Hagmann design minimises distortion of the air flow inside the valve, resulting in a rich, full sound, and is easy to maintain using regular valve oil. Vincent Bach introduced the Hagmann valve into their Stradivarius trombone range in 1999.

Manufacturer’s website: conn-selmer.eu