Bach 15E vs Bob Reeves DR DINO
The Bob Reeves DR DINO has a wider cup diameter, the Bob Reeves DR DINO features a deeper cup.
Mouthpiece A
Bach 15E
• Baritone / Euphonium
Cup diameter24.40 mm
Cup depthShallow
Rim width—
Throat diameter5.85 mm
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bob Reeves DR DINO
• Baritone / Euphonium
Cup diameter25.55 mm
Cup depthMedium
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Cup Diameter
The Bob Reeves DR DINO has a cup diameter of 25.55 mm compared to 24.40 mm on the Bach 15E — a difference of +1.15 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves DR DINO has a medium cup while the Bach 15E has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.