Which has a bigger cup — Denis Wick 4 or Kelly MC?

The Denis Wick 4 has a cup diameter of 18.00 mm / 0.7087 in compared to 16.76 mm / 0.6598 in on the Kelly MC — a difference of 1.24 mm / 0.0488 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Denis Wick 4 and Kelly MC?

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

Denis Wick 4 vs Kelly MC

Name: Kelly MC
Brand: Kelly

The Denis Wick 4 has a wider cup diameter, the Denis Wick 4 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

Denis Wick 4

• French Horn

Rim width5.00 mm / 0.1969 in

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

Mouthpiece B

Kelly MC

• French Horn

General

Rim width—

Best suited for

📣High-volume projection — open throat for power

📋All-purpose French horn

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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Denis Wick 4 vs Kelly MC

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

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Denis Wick vs Kelly

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