GR Technologies 65Z* vs GR Technologies E65S
Both mouthpieces share similar core dimensions — the differences are in the details.
Mouthpiece A
GR Technologies 65Z*
• Trumpet
Cup diameter16.50 mm / 0.6496 in
Cup depthShallow
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
vs
Mouthpiece B
GR Technologies E65S
• Trumpet
Cup diameter16.50 mm / 0.6496 in
Cup depthShallow
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 16.50 mm / 0.6496 in.
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.