Michael Rath CB1 B
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Special Features
- Contrabass_cup
- Bass_shank
Reference Notes
CB1 cup on a bass trombone shank — 28.9mm rim (42.5mm OD), 8.0mm throat. Contrabass cup depth with bass trombone shank for enhanced projection. Use these measurements as a comparison starting point: fit and response still depend on the player, dental structure, instrument receiver, and each manufacturer's measuring method.