Haag Brass

Haag Brass - Bass Trombone


HAAG was the first to install the Thayer and Bosc valves as standard in the tenor trombones. Thanks to innovative work, the Thayer valve was completely redeveloped in 2018 and promises an even better response across all registers. 

The BossBone is equipped with two Bosc valves, these are rotary valves with an open passage and only 80 ° rotation. This valve was developed and invented by Cristian Bosc in 2011, HAAG Brass was the first company to install this valve in trombones at all. The HAAG BossBones can be built individually according to your needs.

  • Tuning: Bb/F/Gb
  • Bore: 14.3mm / .563”
  • Valve: Axialvalve (Thayer)
  • Thumb Lever: German- or Americanstyle
  • Bell Ø: 240mm or Ø 260mm / 9.5″ or 10.5″
  • Bell: German- or Americanstyle, handhammered with or without german rim
  • Bell material : red brass, gold brass, yellow brass, bronze
  • changeable or fixed bell
  • Tuning Slide: Gold brass, brass, copper, bronze
  • Inner slide: nickel silver, chrome-plated
  • Outer slide: gold brass, nickel silver
  • Standard finish: lacquered
  • other finishes on request: matt lacquered, vintage style, silver-plated, gold-plated
  • Accessories: bag and HAAG 5B mouthpiece

Bell Options:

1. Screw Bell

2. Hand Engraved Bell

Options: Bass Trombone ThurBone
Options: Bass Trombone ThurBone