Which has a bigger cup — Denis Wick 2SL or Kelly X-SMALL?

The Denis Wick 2SL has a cup diameter of 32.00 mm / 1.2598 in compared to 30.73 mm / 1.2098 in on the Kelly X-SMALL — a difference of 1.27 mm / 0.0500 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Denis Wick 2SL and Kelly X-SMALL?

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

Denis Wick 2SL vs Kelly X-SMALL

Name: Kelly X-SMALL
Brand: Kelly

The Denis Wick 2SL has a wider cup diameter.

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 2SL

• Tuba

Backboreopen

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Kelly X-SMALL

• Tuba

Student

BackboreS

Best suited for

📋Student / Eb tuba / euphonium doubler

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.