Which has a bigger cup — Bach 8 or Bob Reeves DR DINO?

The Bob Reeves DR DINO has a cup diameter of 25.55 mm / 1.0059 in compared to 24.75 mm / 0.9744 in on the Bach 8 — a difference of 0.80 mm / 0.0315 in. A wider cup generally produces a fuller, darker tone but requires more air support.

Bach 8 vs Bob Reeves DR DINO

Name: Bob Reeves DR DINO
Brand: Bob Reeves

The Bob Reeves DR DINO has a wider cup diameter.

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

How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).

Mouthpiece A

Bach 8

• Baritone / Euphonium

Cup depthMedium

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Bob Reeves DR DINO

• Baritone / Euphonium

Cup depthMedium

Cup Depth

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

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 8 details Bob Reeves DR DINO details Bach 8 equivalents Bob Reeves DR DINO equivalents

Bach 8 vs Bob Reeves DR DINO

Cup Depth

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

Compare Bach 8 with others

Compare Bob Reeves DR DINO with others

Popular Baritone / Euphonium comparisons

Bach vs Bob Reeves

Browse by specification