Which has a bigger cup — Bach 8½A or Denis Wick RW4?

The Denis Wick RW4 has a cup diameter of 16.50 mm / 0.6496 in compared to 16.10 mm / 0.6339 in on the Bach 8½A — a difference of 0.40 mm / 0.0157 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 8½A and Denis Wick RW4?

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

Bach 8½A vs Denis Wick RW4

Name: Denis Wick RW4
Brand: Denis Wick

The Denis Wick RW4 has a wider cup diameter, the Denis Wick RW4 has a larger throat opening.

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

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Bach 8½A

• Cornet

Material—

Mouthpiece B

Denis Wick RW4

• Cornet

Material—

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.