Bach vs Conn Trombone Mouthpieces
Bach offers 74 trombone mouthpieces (made in United States), while Conn has 19 models (made in United States). Below we compare both lineups side by side to help you choose the right brand for your playing style.
Bach
Models74
Avg cup25.40mm
Avg throat6.40mm
Common style—
CountryUnited States
vs
Conn
Models19
Avg cup—
Avg throat—
Common styleGeneral
CountryUnited States
Bach vs Conn — head-to-head comparisons
- Bach 1¼G vs Conn Connstellation 7CW
- Bach 1¼G vs Conn Precision 1
- Bach 1¼G vs Conn Precision 3
- Bach 1¼G vs Conn Precision 3A
- Bach 6½AL (large shank) vs Conn Connstellation 7CW
- Bach 6½AL (large shank) vs Conn Precision 1
- Bach 6½AL (large shank) vs Conn Precision 3
- Bach 6½AL (large shank) vs Conn Precision 3A
- Bach 12E vs Conn Connstellation 7CW
- Bach 12E vs Conn Precision 1
- Bach 12E vs Conn Precision 3
- Bach 12E vs Conn Precision 3A
All models
Bach (74)
1¼G
27.50mm · V.Deep
6½AL (large shank)
25.40mm · Deep
12E
24.50mm · Shallow
12C
24.50mm · Shallow
5GS (large shank)
25.50mm · Deep
6½A (small shank)
25.40mm · Deep
6½AL (small shank)
25.40mm · Deep
4G
26.00mm · V.Deep
5G (large shank)
25.50mm · V.Deep
Mega Tone Trombone 6½A
25.40mm · Deep
Mega Tone Trombone 6½AL
25.40mm · Deep
11C
24.70mm · Shallow
14½D
24.50mm · Shallow
15D
24.40mm · Shallow
5GS (small shank)
25.50mm · Deep
Mega Tone Trombone 5
25.50mm · Medium
Mega Tone Trombone 5GS
25.50mm · Deep
1¼GM
27.50mm · V.Deep
15E
24.40mm · Shallow
6½AM (small shank)
25.40mm · Deep
Conn (19)
Connstellation 7CW
· — · General
Precision 1
· — · Orchestral
Precision 3
· — · General
Precision 3A
· — · General
Connstellation 5BN
· V.Deep · General
Connstellation 5CN
· — · General
Connstellation 7BN
· V.Deep · General
Connstellation 7CN
· — · General
Imp. Precision 3A
· — · General
Imp. Precision 5
· V.Deep · General
Imp. Precision 3
· — · General
Imp. Precision 4
· — · Orchestral
Connstellation 9BN
· V.Deep · General
Imp. Precision 1
· — · Orchestral
Imp. Precision 2
· Deep · Lead
Precision 2
· Deep · Lead
Simone Mantia 10
· — · Orchestral
Simone Mantia 11
· — · General
Precision 4
· — · Orchestral
Frequently asked questions
Which brand makes better trombone mouthpieces — Bach or Conn?
Neither brand is universally better. Bach has 74 models and Conn has 19. 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 trombone mouthpieces compare in size?
Bach averages 25.40mm cup diameter with 6.40mm throat. Conn averages N/Amm cup diameter with N/Amm throat.