C** Cups

The C** Cups feature the GR Symphonic Blank, GR Standard Rims, and GR #3 Backbore. 

The C** was designed to have a similar blow and feel to older traditional C cup designs, although, improving intonation, slotting, articulation and efficiency.  It is an excellent choice for the Bb and C trumpet featuring a higher alpha angle (similar to M cup) and a larger cup volume. 

The design allows for added lip support and efficient playing characteristics throughout the range of the trumpet. 

The C** has a more open throat entrance than the C* requiring more strength.  The C** is a powerful mouthpiece that has a great volume of sound, good articulation, and excellent projection. 

The C** will be a good choice for the orchestra, concert band, solo work, or quintet.  All the C Series (C*, C**, and C) have the same rim, alpha angle, L1, and 1^st cup radius (R1) to provide easy accommodation when switching between Bb, C, and D/Eb, as well as, accommodating other playing requirements.