Perantucci Sousaphone Mouthpiece SP-8
 
This mouthpiece is based PT-88+ with a large, deep cup for strong musicians.
 
SP-8 -Sousapower 8 - Top Edge
Cup Diameter - 33.5 mm
Cup - Deep Well Rounded
Rim - 7 mm Well defined inner edge
Throat Bore - 8.1 mm
Shank - Small (American)
Finish - Silver Plated
 
A unique balance between cup shape, throat and back bore dimensions assures excellent intonation. Sound Energy generated by the player is enhanced by these new mouthpieces. A firm embouchure interacts with and compliments the acoustical impedance generated in the instrument.
 
The results are superior: high output results in efficiency and therefore ease of performance.  Works well with BBb and CC Tubas.