Adams Musical Instruments - Together in Music

C Contrabass Tuba 6/4

Built with the original tooling and molds of Hirsbrunner, Adams re-designed and improved the legendary Yorkbrunner. The instrument is known as one of the best replicas of the legendary York 6/4 CC tuba.   

The C Contrabass Tuba 6/4 is the larger version of the C Tuba 4/4. The geometry of the Adams C Tuba ensures an extremely powerful and dark tone with plenty of core.

When testing and adjusting the C Contrabass Tuba, Adams focused on crafting an instrument with great projection and rich overtones that would sound impressive in any large concert hall.


  • Key: C
  • Size: 6/4
  • Bell: Yellow Brass
  • Bell diameter: 500 mm
  • Bore: 19 mm (1st, 2nd, 3rd valve), 20 mm (4th valve) and 22 mm (5th valve - rotary)
  • Finish: Silver plated
  • Gauge: 0.60

Build your own?

If you would like to configure your own tuba to your personal preferences, Adams will fully custom built your instrument. Please see this page for custom options.

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