Bob Reeves 42/DF vs Bruno Tilz 210-S 5 E
The Bob Reeves 42/DF has a wider cup diameter, the Bob Reeves 42/DF features a deeper cup.
Mouthpiece A
Bob Reeves 42/DF
• Flugelhorn
Cup diameter16.67 mm
Cup depthDeep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
vs
Mouthpiece B
Bruno Tilz 210-S 5 E
• Flugelhorn
CatalogCup diameter16.50 mm
Cup depthMedium
Rim width—
Throat diameter3.50 mm
Backbore—
Finish—
Material—
Best suited for
All-round versatile — balanced cup for general playing
Cup Diameter
The Bob Reeves 42/DF has a cup diameter of 16.67 mm compared to 16.50 mm on the Bruno Tilz 210-S 5 E — a difference of +0.17 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves 42/DF has a deep cup while the Bruno Tilz 210-S 5 E has a medium 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.