I have a Gronitz PF 125, I need a big mouthpiece for tuba F.
I've tried the Jim Self, John Sass, various ... I do not know!
Before suggesting I talk to my teacher, he is a trombonist!
I need help ... I think the edge should be between 32.7 and 33mm deep and should be ...
Help me please, my recital graduation is the end of this year and am still with many doubts mouthpiece.
best





