Bob Reeves 42/DF vs Bob Reeves 43/HF
The Bob Reeves 43/HF has a wider cup diameter, the Bob Reeves 43/HF 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
Bob Reeves 43/HF
• Flugelhorn
Cup diameter17.07 mm
Cup depthVery deep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The Bob Reeves 43/HF has a cup diameter of 17.07 mm compared to 16.67 mm on the Bob Reeves 42/DF — a difference of +0.40 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves 43/HF has a very deep cup while the Bob Reeves 42/DF has a deep 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.