Yamaha GP Series

Featuring an innovative shape and extra heavy gold-plate finish, the GP Series is for advanced players who prefer a focused, concentrated tonal core. Yamaha chose different weights and shapes for each model to ensure an ideal balance between instrument and mouthpiece. The cup and inner bore are also gold plated for superior projection and smooth response.

Regarding the Yamaha mouthpiece numbering system, using the model 14A4a as an example:


14 Refers to "Cup Diameter"

  • Smallest numbers have the smallest diameters. Diameter size increases as the number increases.

    • A Refers to "Cup Volume"

  • A. Small - Shallow
  • B. Medium Small RIM CONTOUR
  • C. Standard - Medium
  • D. Medium Large
  • E. Large

    • 4 Refers to "Rim Contour"

  • 1. Roundest
  • 2. Semi-Round
  • 3. Standard
  • 4. Semi-Flat
  • 5. Flattest

    • a Refers to "Backbore"

  • a. Tight
  • b. Straight - slightly more open
  • c. Standard
  • d. Medium Large - slightly curved out
  • e. Large
  • x. Piccolo - X Large