Which has a bigger cup — Conn Precision 3 or Giardinelli 17S?

The Conn Precision 3 has a cup diameter of 16.41 mm / 0.6461 in compared to 15.00 mm / 0.5906 in on the Giardinelli 17S — a difference of 1.41 mm / 0.0555 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Conn Precision 3 and Giardinelli 17S?

The Conn Precision 3 has a medium cup while the Giardinelli 17S has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Conn Precision 3 vs Giardinelli 17S

Name: Giardinelli 17S
Brand: Giardinelli

The Conn Precision 3 has a wider cup diameter, the Conn Precision 3 features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.

Mouthpiece A

Conn Precision 3

• Cornet

General

Throat diameter—

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

Mouthpiece B

Giardinelli 17S

• Cornet

Throat diameter—

Best suited for

🎺Lead / commercial — shallow cup for brightness and range

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.

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Conn Precision 3 vs Giardinelli 17S

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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