YAMAHA-Mouthpiece Tuba Signature GP -Roger Bobo- Symphonic

YAMAHA-Mouthpiece Tuba Signature GP -Roger Bobo- Symphonic, rim inner diameter: 32.90mm, rim contour: standard, rim thickness: standard, cup depth: semi-shallow, throat: 7.50mm, backbore: standard, the Symphonic model is characterized by a warm tone, big enough to fill the concert with rich colorful sound. GP Series has been created especially for professionals who require superior quality from their mouthpiece. The GP Series features an innovative shape and extra-heavy gold-plate finish for players who prefer a focused, concentrated tonal core.