Bob Reeves 40/S/2 vs GR Technologies 62S
The Bob Reeves 40/S/2 has a wider cup diameter.
Mouthpiece A
Bob Reeves 40/S/2
• Trumpet
Cup diameter15.88 mm / 0.6252 in
Cup depthShallow
Rim width—
Throat diameter—
Backbore2
Finish—
Material—
Best suited for
Lead / commercial — shallow cup for brightness and range
vs
Mouthpiece B
GR Technologies 62S
• Trumpet
Cup diameter15.75 mm / 0.6201 in
Cup depthShallow
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Lead / commercial — shallow cup for brightness and range
Cup Diameter
The Bob Reeves 40/S/2 has a cup diameter of 15.88 mm / 0.6252 in compared to 15.75 mm / 0.6201 in on the GR Technologies 62S — a difference of 0.13 mm / 0.0051 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a shallow 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.