Name: Yamaha TR-14B4
Brand: Yamaha

Question 1

What is the difference between GR Technologies 64Z** and Yamaha TR-14B4?

Accepted Answer

The Yamaha TR-14B4 has a wider cup diameter.

Question 2

Which has a bigger cup — GR Technologies 64Z** or Yamaha TR-14B4?

Accepted Answer

The Yamaha TR-14B4 has a cup diameter of 16.85 mm / 0.6634 in compared to 16.26 mm / 0.6402 in on the GR Technologies 64Z** — a difference of 0.59 mm / 0.0232 in. A wider cup generally produces a fuller, darker tone but requires more air support.

Question 3

How does cup depth compare between GR Technologies 64Z** and Yamaha TR-14B4?

Accepted Answer

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

Question 4

Which is better, GR Technologies 64Z** or Yamaha TR-14B4?

Accepted Answer

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.

GR Technologies 64Z** vs Yamaha TR-14B4

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