Which has a bigger cup — Kelly 3C or Yamaha CR-DUTOT-S?

The Kelly 3C has a cup diameter of 17.02 mm / 0.6701 in compared to 16.90 mm / 0.6654 in on the Yamaha CR-DUTOT-S — a difference of 0.12 mm / 0.0047 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Kelly 3C and Yamaha CR-DUTOT-S?

Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.

Kelly 3C vs Yamaha CR-DUTOT-S

Name: Yamaha CR-DUTOT-S
Brand: Yamaha

The Kelly 3C has a wider cup diameter, the Kelly 3C has a larger throat opening.

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

The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

Kelly 3C

• Cornet

General

Rim width—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

📋All-purpose mid-range

Mouthpiece B

Yamaha CR-DUTOT-S

• Cornet

Rim width—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

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.

Open in interactive tool + Add third mouthpiece Kelly 3C details Yamaha CR-DUTOT-S details Kelly 3C equivalents Yamaha CR-DUTOT-S equivalents

Kelly 3C vs Yamaha CR-DUTOT-S

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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