The GP Series mouthpieces feature an innovative shape and extra-heavy 24k gold-plated finish for players who prefer a focused, concentrated tonal core. Trumpet Mouthpiece Specifications Model Rim Cup Depth Throat Backbore Playing Charateristics Inner Diameter Contour Thickness YAC TR7A4-GPR 16 mm semi-flat thick shallow 3.65 mm narrow Relatively small inner rim diameter, but still flexible. Perfect for piccolo or lead trumpet. YAC TR8C4-GPR 16.3 mm semi-flat standard standard 3.65 mm semi-narrow Good for all-around playing, including solos. Combines an extended high range with rich lows. YAC TR11B4-GP R 16.4 mm semi-flat standard semi-shallow 3.65 mm semi-narrow A somewhat shallow cup and medium rim for extra endurance. Brilliant tone. Suitable for D, Eb , and piccolo trumpets. YAC TR14A4a-GPR 16.7 mm semi-flat semi-thick shallow 3.65 mm semi-narrow Fast-response high range and powerful sound. Ideal for piccolo or lead trumpet. YAC TR14B4-GPR 16.7 mm semi-flat standard semi-shallow 3.65 mm semi-narrow Relatively large rim diameter and shallow cup. Outstanding overall balance for all musical genres. YAC TR14C4-GPR 16.7 mm semi-flat standard standard 3.65 mm semi-narrow Rim designed for outstanding facility and flexibility. Popular in ensembles and orchestras. Can produce high volume. YAC TR16C4-GPR 17 mm semi-flat standard standard 3.65 mm semi-narrow Large rim and medium cup for easy...

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