The mission of Patrick Mouthpieces is to provide trumpet players the tools necessary to perform on their instruments what they hear in their head, and to enable us all to switch between musical genres and not compromise sound or performance.
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*Please note, this model was originally designed with the RR rim profile, and is now available with the FR and CR rims*
There would be no Bach inner diameter comparison to this mouthpiece that I know of, but if Bach made one, it would be around a Bach 14 inner diameter. This mouthpiece has a medium shallow V cup design. This mouthpiece has more resistance than the old Jet-tones providing more endurance, better projection and an easier high end. The sound is full and resonant from the very bottom of the range to the top.
Available Rim Profiles:
91M: 0.6309 inner diameter measured at 0.30" 0.1410 throat 28 drill 1.0964 outside diameter