The AMH "Paul" tuba mouthpiece is designed to be used with F or Eb tubas but can also work well with BBb or CC tubas.  The Paul mouthpiece was originally designed with the German orchestral F tuba sound in mind.  This design concept helps to make response quicker, better flexibility, and more consistent intonation throughout the full range of instrument.  This product is designed by international tuba virtuoso Andreas Hofmeir.

The AMH "Paul" has a small/American shank.
 

 

Specifications
Inner diameter:  32mm/1.26in
Cup:  deep, funnel
Rim:  narrow, medium sharp inner edge
Bore:  8.85mm/0.35in