Kelly vs Marcinkiewicz Cornet Mouthpieces

Kelly offers 9 cornet mouthpieces (made in United States), while Marcinkiewicz has 71 models (made in United States). On average, Kelly cups measure 16.37mm versus 17.00mm for Marcinkiewicz. Below we compare both lineups side by side to help you choose the right brand for your playing style.

Kelly

Models9
Avg cup16.37mm
Avg throat3.87mm
Common styleGeneral
CountryUnited States
vs

Marcinkiewicz

Models71
Avg cup17.00mm
Avg throat4.26mm
Common style
CountryUnited States

All models

Frequently asked questions

Which brand makes better cornet mouthpieces — Kelly or Marcinkiewicz?

Neither brand is universally better. Kelly has 9 models and Marcinkiewicz has 71. The best choice depends on your playing style, preferred cup depth, and tonal goals. Compare specific models head-to-head to find the right fit.

How do Kelly and Marcinkiewicz cornet mouthpieces compare in size?

Kelly averages 16.37mm cup diameter with 3.87mm throat. Marcinkiewicz averages 17.00mm cup diameter with 4.26mm throat.