Which has a bigger cup — GR Technologies 64SZ or Schilke 13A4a?

The Schilke 13A4a has a cup diameter of 16.76 mm / 0.6598 in compared to 16.26 mm / 0.6402 in on the GR Technologies 64SZ — a difference of 0.50 mm / 0.0197 in. A wider cup generally produces a fuller, darker tone but requires more air support.

GR Technologies 64SZ vs Schilke 13A4a

Name: Schilke 13A4a
Brand: Schilke

The Schilke 13A4a has a wider cup diameter.

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

How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).

Mouthpiece A

GR Technologies 64SZ

• Trumpet

Cup depthShallow

Mouthpiece B

Schilke 13A4a

• Trumpet

Cup depthShallow

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.

Open in interactive tool + Add third mouthpiece GR Technologies 64SZ details Schilke 13A4a details GR Technologies 64SZ equivalents Schilke 13A4a equivalents

GR Technologies 64SZ vs Schilke 13A4a

Cup Depth

Playing Characteristics

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