Which has a bigger cup — Bob Reeves 40/S/2 or GR Technologies 62S?

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.

How does cup depth compare between Bob Reeves 40/S/2 and GR Technologies 62S?

Both mouthpieces share a shallow cup depth, so the sound character from depth alone will be very similar.

Bob Reeves 40/S/2 vs GR Technologies 62S

Name: GR Technologies 62S
Brand: GR Technologies

The Bob Reeves 40/S/2 has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Bob Reeves 40/S/2

• Trumpet

Backbore2

Best suited for

🎺Lead / commercial — shallow cup for brightness and range

Mouthpiece B

GR Technologies 62S

• Trumpet

Backbore—

Best suited for

🎺Lead / commercial — shallow cup for brightness and range

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.

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Bob Reeves 40/S/2 vs GR Technologies 62S

Playing Characteristics

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