Bob Reeves 43.5/B/X vs GR Technologies Zony 9C*
The Bob Reeves 43.5/B/X has a wider cup diameter.
Mouthpiece A
Bob Reeves 43.5/B/X
• Trumpet
Cup diameter17.26 mm / 0.6795 in
Cup depthVery deep
Rim width—
Throat diameter—
BackboreX
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
GR Technologies Zony 9C*
• Trumpet
Cup diameter17.25 mm / 0.6791 in
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 43.5/B/X has a cup diameter of 17.26 mm / 0.6795 in compared to 17.25 mm / 0.6791 in on the GR Technologies Zony 9C* — a difference of 0.01 mm / 0.0004 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a very deep 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.