Which has a bigger cup — Conn Imp. Precision 2 or Kelly 3C?

The Kelly 3C has a cup diameter of 17.02 mm / 0.6701 in compared to 16.41 mm / 0.6461 in on the Conn Imp. Precision 2 — a difference of 0.61 mm / 0.0240 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Conn Imp. Precision 2 and Kelly 3C?

The Conn Imp. Precision 2 has a — cup while the Kelly 3C has a very deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Conn Imp. Precision 2 vs Kelly 3C

Name: Kelly 3C
Brand: Kelly

The Kelly 3C has a wider cup diameter, the Conn Imp. Precision 2 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 Imp. Precision 2

• Cornet

General

Throat diameter—

Best suited for

📋Players wanting volume; narrower rim than Model 1

🎶Plenty of volume; big tone

Mouthpiece B

Kelly 3C

• Cornet

General

Throat diameter4.06 mm / 0.1598 in

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

📋All-purpose mid-range

Which is better?

Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.

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Conn Imp. Precision 2 vs Kelly 3C

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

Compare Conn Imp. Precision 2 with others

Compare Kelly 3C with others

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