JK Exclusive 1A

TrumpetIn Production

Precision Specifications

RIM DIAMETER17.6 mm

CUP DEPTHDeep

THROAT ∅—

BACKBORE—

SHANKstandard

CUP SHAPEbowl

Rim Width—

Rim Contour—

Throat Drill #—

Material—

Finish—

Weight—

Catalog Status

JK Exclusive trumpet size 1 with A cup.

Some lab-style fields are still missing on this entry, so the spec display focuses on the dimensions and fit data we can currently support.

Recommended For

All AroundClassical

Special Features

Exclusive

About This Mouthpiece

JK Exclusive trumpet size 1 with A cup. | Very deep Exclusive trumpet cup. | Outer rim 28 mm.

View on Manufacturer Site →JK ↗

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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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