Conn vs GR Technologies Trumpet Mouthpieces
Conn offers 29 trumpet mouthpieces (made in United States), while GR Technologies has 113 models (made in United States). On average, Conn cups measure 16.38mm versus 16.59mm for GR Technologies. Below we compare both lineups side by side to help you choose the right brand for your playing style.
Conn
Models29
Avg cup16.38mm
Avg throat3.66mm
Common styleLead
CountryUnited States
vs
GR Technologies
Models113
Avg cup16.59mm
Avg throat—
Common style—
CountryUnited States
Conn vs GR Technologies — head-to-head comparisons
- Conn Precision 4 vs GR Technologies 66M
- Conn Precision 4 vs GR Technologies 65SZ
- Conn Precision 4 vs GR Technologies 63S
- Conn Precision 4 vs GR Technologies 3M
- Conn Helleberg 7B vs GR Technologies 66M
- Conn Helleberg 7B vs GR Technologies 65SZ
- Conn Helleberg 7B vs GR Technologies 63S
- Conn Helleberg 7B vs GR Technologies 3M
- Conn Harry Glanz 7M vs GR Technologies 66M
- Conn Harry Glanz 7M vs GR Technologies 65SZ
- Conn Harry Glanz 7M vs GR Technologies 63S
- Conn Harry Glanz 7M vs GR Technologies 3M
All models
Conn (29)
Precision 4
16.41mm · Medium · General
Helleberg 7B
16.20mm · Medium · All-round
Harry Glanz 7M
· Medium · Lead
Imp. Precision 2
16.41mm · — · General
Imp. Precision 4
16.41mm · Medium · General
Imp. Precision 5
· Shallow · Lead
Precision 2
16.41mm · — · General
Precision 5
· Shallow · Lead
Connstellation 5BN
16.76mm · V.Deep · Orchestral
Connstellation 5BW
16.76mm · V.Deep · Orchestral
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
Imp. Precision 1
16.56mm · — · General
Imp. Precision 6
16.41mm · Shallow · Lead
Precision 1
16.56mm · — · General
Precision 3
16.41mm · Medium · General
Harry Glanz 9M
· Medium · Lead
GR Technologies (113)
66M
16.76mm · Medium
65SZ
16.50mm · Shallow
63S
16.00mm · Shallow
3M
16.76mm · Medium
63Z*
16.00mm · Shallow
63Z**
16.00mm · Shallow
64SZ
16.26mm · Shallow
63SZ
16.00mm · Shallow
64S
16.26mm · Shallow
66CX
16.76mm · V.Deep
63MS
16.00mm · Medium
66MS
16.76mm · Medium
62MS
15.75mm · Medium
64.7M
16.43mm · Medium
64ES
16.26mm · Shallow
64M
16.26mm · Medium
65ES
16.50mm · Shallow
65LX
16.50mm · V.Deep
65Z*
16.50mm · Shallow
66LX
16.76mm · V.Deep
Frequently asked questions
Which brand makes better trumpet mouthpieces — Conn or GR Technologies?
Neither brand is universally better. Conn has 29 models and GR Technologies has 113. 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 GR Technologies trumpet mouthpieces compare in size?
Conn averages 16.38mm cup diameter with 3.66mm throat. GR Technologies averages 16.59mm cup diameter with N/Amm throat.