Conn vs Kelly Cornet Mouthpieces
Conn offers 27 cornet mouthpieces (made in United States), while Kelly has 9 models (made in United States). On average, Conn cups measure 16.40mm versus 16.37mm for Kelly. Below we compare both lineups side by side to help you choose the right brand for your playing style.
Conn
Models27
Avg cup16.40mm
Avg throat—
Common styleLead
CountryUnited States
vs
Kelly
Models9
Avg cup16.37mm
Avg throat3.87mm
Common styleGeneral
CountryUnited States
Conn vs Kelly — head-to-head comparisons
- Conn Connstellation 9BN vs Kelly 3C
- Conn Connstellation 9BN vs Kelly 5C
- Conn Connstellation 9BN vs Kelly 7C
- Conn Connstellation 9BN vs Kelly 7C-UK
- Conn Harry Glanz 7M vs Kelly 3C
- Conn Harry Glanz 7M vs Kelly 5C
- Conn Harry Glanz 7M vs Kelly 7C
- Conn Harry Glanz 7M vs Kelly 7C-UK
- Conn Precision 3 vs Kelly 3C
- Conn Precision 3 vs Kelly 5C
- Conn Precision 3 vs Kelly 7C
- Conn Precision 3 vs Kelly 7C-UK
All models
Conn (27)
Connstellation 9BN
15.88mm · V.Deep · Lead
Harry Glanz 7M
· Medium · Lead
Precision 3
16.41mm · Medium · General
Precision 4
16.41mm · Medium · General
Connstellation 9CW
15.88mm · — · Lead
Harry Glanz 6M
· Medium · Lead
Harry Glanz 8M
· Medium · Lead
Harry Glanz 9M
· Medium · Lead
Imp. Precision 1
16.56mm · — · General
Imp. Precision 2
16.41mm · — · General
Imp. Precision 3
16.41mm · Medium · General
Imp. Precision 4
16.41mm · Medium · General
Connstellation 5CW
16.76mm · — · Orchestral
Connstellation 7BW
16.42mm · V.Deep · General
Connstellation 7CN
16.42mm · — · General
Connstellation 7CW
16.42mm · — · General
Imp. Precision 5
· Shallow · Lead
Precision 2
16.41mm · — · General
Connstellation 5CN
16.76mm · — · Orchestral
Harry Glanz 5M
· Medium · Lead
Frequently asked questions
Which brand makes better cornet mouthpieces — Conn or Kelly?
Neither brand is universally better. Conn has 27 models and Kelly has 9. 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 Conn and Kelly cornet mouthpieces compare in size?
Conn averages 16.40mm cup diameter with N/Amm throat. Kelly averages 16.37mm cup diameter with 3.87mm throat.