About the Model 11DR The 11D offers a Geyer Style horn with a medium throat bell. Offers a quick and bright response. The Conn 11DR provides control and focus with the flexibility of sound needed in chamber, solo and orchestral settings. The horn features a Geyer style wrap that allows ease of slurs throughout all registers as well as outstanding response and flexibiliy. The medium throat, rose brass bell creates a darker, richer sound than the 11D but not as big as the 8D. This makes the 11DR an ideal crossover horn for artists looking for an all-purpose instrument for all types of music. Other features include a reversible 4th rotor and adjustable thumb spatula to accomodate different hand sizes.