Conn Precision 4 vs Yamaha TR-14B4
The Yamaha TR-14B4 has a wider cup diameter, the Conn Precision 4 features a deeper cup.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Conn Precision 4
• Trumpet
GeneralBackbore—
Best suited for
All-round versatile — balanced cup for general playing
Players with large lips; close to Bach 2C/Schilke 16C4
Bright tone; same as Model 3 with wide rim
vs
Mouthpiece B
Yamaha TR-14B4
• Trumpet
BackboreSemi-narrow
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.