Which has a bigger cup — Denis Wick 6BY or Yamaha AH-37C4?

The Denis Wick 6BY has a cup diameter of 25.40 mm / 1.0000 in compared to 18.60 mm / 0.7323 in on the Yamaha AH-37C4 — a difference of 6.80 mm / 0.2677 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Denis Wick 6BY and Yamaha AH-37C4?

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

Denis Wick 6BY vs Yamaha AH-37C4

Name: Yamaha AH-37C4
Brand: Yamaha

The Denis Wick 6BY has a wider cup diameter, the Denis Wick 6BY has a larger throat opening.

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

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Denis Wick 6BY

• Baritone / Euphonium

Backboremedium

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Yamaha AH-37C4

• Baritone / Euphonium

BackboreStandard

Best suited for

📣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.

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Denis Wick 6BY vs Yamaha AH-37C4

Playing Characteristics

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