Yamaha TR-14A4a-GP
TrumpetIn Production
Precision Specifications
RIM DIAMETER16.68 mm
CUP DEPTHShallow
THROAT ∅3.65 mm
BACKBORENarrow
SHANKGP finish; fast response and powerful high range.5
CUP SHAPE—
Rim Widthstandard
Rim Contoursemi-flat
Throat Drill #—
Materialbrass
FinishGold plated
Weight—
Recommended For
LeadCommercial
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Special Features
- Gold Plated
Reference Notes
Yamaha TR-14A4a-GP appears in the Trumpet catalog section with 16.68 mm rim, Shallow cup, 3.65 mm throat, Narrow backbore, and GP finish; fast response and powerful high range.5 shank. Database tags list it for Lead and Commercial use. Noted features include Gold Plated. Use these measurements as a comparison starting point: fit and response still depend on the player, dental structure, instrument receiver, and each manufacturer's measuring method.
Brand Deep Dive
Yamaha · BrassFit Science
Yamaha Mouthpiece Guide
Yamaha mouthpiece numbering, cup families, and instrument-specific selection guide.