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

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Conn Precision 3

• Cornet

General

Finish—

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

Finish—

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?

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