Bach vs Conn Trumpet Mouthpieces
Bach offers 103 trumpet mouthpieces (made in United States), while Conn has 29 models (made in United States). On average, Bach cups measure 16.21mm versus 16.38mm for Conn. Below we compare both lineups side by side to help you choose the right brand for your playing style.
Bach
Models103
Avg cup16.21mm
Avg throat3.68mm
Common style—
CountryUnited States
vs
Conn
Models29
Avg cup16.38mm
Avg throat3.66mm
Common styleLead
CountryUnited States
Bach vs Conn — head-to-head comparisons
- Bach 3C vs Conn Precision 4
- Bach 3C vs Conn Connstellation 5CN
- Bach 3C vs Conn Connstellation 9BW
- Bach 3C vs Conn Connstellation 9CN
- Bach 1½C vs Conn Precision 4
- Bach 1½C vs Conn Connstellation 5CN
- Bach 1½C vs Conn Connstellation 9BW
- Bach 1½C vs Conn Connstellation 9CN
- Bach 1 vs Conn Precision 4
- Bach 1 vs Conn Connstellation 5CN
- Bach 1 vs Conn Connstellation 9BW
- Bach 1 vs Conn Connstellation 9CN
All models
Bach (103)
3C
16.30mm · Medium
1½C
17.00mm · Medium
1
17.50mm · V.Deep
5C
16.25mm · Medium
1¼C
17.00mm · Medium
10½C
15.90mm · Medium
3
16.30mm · V.Deep
7C
16.20mm · Medium
5B
16.25mm · Deep
1C
17.00mm · Medium
10
16.00mm · V.Deep
3D
16.30mm · Shallow
7
16.20mm · V.Deep
7EW
16.20mm · Shallow
10¾CW
15.75mm · Medium
Mega Tone 5B
16.25mm · Deep
10½CW
15.90mm · Medium
10½EW
15.90mm · Shallow
3B
16.30mm · Deep
3CW
16.30mm · Medium
Conn (29)
Precision 4
16.41mm · Medium · General
Connstellation 5CN
16.76mm · — · Orchestral
Connstellation 9BW
15.88mm · V.Deep · Lead
Connstellation 9CN
15.88mm · — · Lead
Harry Glanz 5M
· Medium · Lead
Harry Glanz 6M
· Medium · Lead
Helleberg 7B
16.20mm · Medium · All-round
Precision 1
16.56mm · — · General
Precision 2
16.41mm · — · General
Harry Glanz 7M
· 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
Imp. Precision 5
· Shallow · Lead
Precision 3
16.41mm · Medium · General
Precision 5
· Shallow · Lead
Connstellation 5BN
16.76mm · V.Deep · Orchestral
Connstellation 5BW
16.76mm · V.Deep · Orchestral
Frequently asked questions
Which brand makes better trumpet mouthpieces — Bach or Conn?
Neither brand is universally better. Bach has 103 models and Conn has 29. 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 Bach and Conn trumpet mouthpieces compare in size?
Bach averages 16.21mm cup diameter with 3.68mm throat. Conn averages 16.38mm cup diameter with 3.66mm throat.