Which has a bigger cup — Bach 4C or Bob Reeves DR DINO?

The Bach 4C has a cup diameter of 25.75 mm / 1.0138 in compared to 25.55 mm / 1.0059 in on the Bob Reeves DR DINO — a difference of 0.20 mm / 0.0079 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 4C and Bob Reeves DR DINO?

The Bob Reeves DR DINO has a medium cup while the Bach 4C has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 4C vs Bob Reeves DR DINO

Name: Bob Reeves DR DINO
Brand: Bob Reeves

The Bach 4C has a wider cup diameter, the Bob Reeves DR DINO features a deeper cup.

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 4C

• Baritone / Euphonium

Material—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Bob Reeves DR DINO

• Baritone / Euphonium

Material—

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.

Open in interactive tool + Add third mouthpiece Bach 4C details Bob Reeves DR DINO details Bach 4C equivalents Bob Reeves DR DINO equivalents

Bach 4C vs Bob Reeves DR DINO

Playing Characteristics

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What Changes If You Switch?

Which is better?

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