The trumpet mouthpiece GP 17C4 from Yamaha is characterized by a soloistic sound. The gold-plated cup and rim are warm and comfortable on the lips. The additional Gewicht of the mouthpiece makes the notes hit better in the center and the sound becomes fuller. The large cup provides an enormous sound volume which is especially suitable for the classical soloist. The sound offers a lot of core without losing warmth. The mouthpiece has an inner diameter of 17.30 mm and a bore of 3.65mm.