Which has a bigger cup — Giardinelli 6VM or GR Technologies 66M?

The GR Technologies 66M has a cup diameter of 16.76 mm / 0.6598 in compared to 16.70 mm / 0.6575 in on the Giardinelli 6VM — a difference of 0.06 mm / 0.0024 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Giardinelli 6VM and GR Technologies 66M?

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

Giardinelli 6VM vs GR Technologies 66M

Name: GR Technologies 66M
Brand: GR Technologies

The GR Technologies 66M has a wider cup diameter.

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

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Giardinelli 6VM

• Trumpet

Material—

Best suited for

🎵All-round versatile — balanced cup for general playing

Mouthpiece B

GR Technologies 66M

• Trumpet

Material—

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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Giardinelli 6VM vs GR Technologies 66M

Playing Characteristics

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