GR 64S

TrumpetIn Production

Specifications

Brand	GR
Model	64S
Instrument	Trumpet
Rim Diameter	16.3 mm
Rim Width	medium
Rim Contour	gr
Cup Depth	Shallow
Cup Depth (mm)	—
Cup Shape	bowl
Throat Diameter	3.55 mm
Throat Drill #	—
Backbore	tight
Shank	standard
Material	brass
Finish	silver-plate
Weight	standard

Recommended For

LeadCommercial

About This Mouthpiece

The GR Technologies 64S is a shallow-cup Bb trumpet mouthpiece featuring a 16.3mm rim diameter and 3.55mm throat. It has a tight backbore, standard shank. Well-suited for lead and commercial playing.

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Rate This Piece — 8 Dimensions

Physical Feel

Resistance— Back-pressure & support

1 — Free-blowingRestrictive — 10

Rim Comfort— How kind is it on your chops?

1 — UncomfortableVery comfortable — 10

Rim Bite— Sharpness of the rim edge

1 — Very round / forgivingVery sharp / precise — 10

Tonal Character

Brightness— Overall spectral colour

1 — Dark & warmBright & piercing — 10

Tone Focus— Core vs. spread sound

1 — Spread / diffuseCentred / laser — 10

Playability

Articulation— Clarity & crispness of attack

1 — Blurry / sluggishCrisp & immediate — 10

Flexibility— Ease of slurs & pitch bending

1 — Rigid / stiffFluid & flexible — 10

Stamina

Endurance— How long before fatigue sets in?

1 — Tires quicklyPlays all night — 10

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