Yamaha - GP Series Trumpet Mouthpieces

Model No. Rim Inner Diameter (mm) Throat
TR-11B4-GP 16.46 3.65 A somewhat shallow cup and medium rim for extra endurance. Brilliant tone. Suitable for D, Eb, and piccolo trumpets.
TR-14A4a-GP 16.68 3.65 Fast-response high range and powerful sound. Ideal for piccolo or lead trumpet.
TR-14B4-GP 16.85 3.65 Relatively large rim diameter and shallow cup. Outstanding overall balance for all musical genres.
TR-14C4-GP 16.88 3.65 Rim designed for outstanding facility and flexibility. Popular in ensembles and orchestras. Can produce high volume.
TR-16C4-GP 17.00 3.65 Large rim and medium cup for easy playability over a wide range. High volume. Excellent for symphony orchestra players.
TR-17C4-GP 17.30 3.65 Powerful, dark sound. A popular choice with symphony orchestra players.

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