Which has a bigger cup — Schilke 51D or Yamaha AH-38D4?

The Schilke 51D has a cup diameter of 25.55 mm / 1.0059 in compared to 18.90 mm / 0.7441 in on the Yamaha AH-38D4 — a difference of 6.65 mm / 0.2618 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Schilke 51D and Yamaha AH-38D4?

The Yamaha AH-38D4 has a deep cup while the Schilke 51D has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Schilke 51D vs Yamaha AH-38D4

Name: Yamaha AH-38D4
Brand: Yamaha

The Schilke 51D has a wider cup diameter, the Yamaha AH-38D4 features a deeper cup, the Schilke 51D 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

Schilke 51D

• Baritone / Euphonium

BackboreJ .277"

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Yamaha AH-38D4

• Baritone / Euphonium

BackboreStandard

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.

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Schilke 51D vs Yamaha AH-38D4

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