Conn Precision 3 vs Giardinelli 1VS
The Giardinelli 1VS has a wider cup diameter, the Conn Precision 3 features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Conn Precision 3
• Cornet
GeneralCup diameter16.41 mm / 0.6461 in
Best suited for
All-round versatile — balanced cup for general playing
All-around use; most popular model
Bright quality of tone in all registers; good all-around
vs
Mouthpiece B
Giardinelli 1VS
• Cornet
Cup diameter17.50 mm / 0.6890 in
Cup Diameter
The Giardinelli 1VS has a cup diameter of 17.50 mm / 0.6890 in compared to 16.41 mm / 0.6461 in on the Conn Precision 3 — a difference of 1.09 mm / 0.0429 in. A wider cup generally produces a fuller, darker tone but requires more air support.
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.