These mouthpieces have the feel and response that professional players demand.
- B: A deeper bowl than the G. Has an excellent bottom sound
- H: (Helleberg) Relatively straight sides that blend into a concave funnel as it enters the throat
- G: (Geib) Produces a more brilliant sound than the H and works well on rotary valve tubas
- F: Like the Helleberg cup in shape, but approximately 1/3 more shallow