Yamaha
HR-29D4
One Piece
Official source link providedPrice basis: RetailerLast checked: Jan 29, 2026
Double-cup combining medium and extra-deep V cups with larger throat for rich sound.
Specifications
Cup Diameter
16.88mm
16.88mm18.08mm
Cup Depth
Deep
Cup Shape
combined_UV
Bore Size
4.50mm
3.90mm4.50mm
Rim Shape
Medium
Other Brand Similar Specs
Spec proximity does not guarantee actual feel or tone. Trying before purchase is recommended.
Paxman 3CHigh Similarity
Cup Diameter: +0.01mmBore: SameCup shape data unavailable
Specs used: 4 / missing: 1
Paxman 3BMedium Similarity
Cup Diameter: +0.01mmBore: SameCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Bach 10Medium Similarity
Cup Diameter: -0.08mmBore: SameCup shape data unavailable
Specs used: 4 / missing: 1
Paxman 3AMedium Similarity
Cup Diameter: +0.01mmBore: SameCup Depth: deep → shallowCup shape data unavailable
Specs used: 4 / missing: 1
Houser Houghton H3Medium Similarity
Cup Diameter: -0.12mmBore: -0.11mmcrossRef.shapeMatch
Specs used: 5 / missing: 0
Stork C (Deep)Low Similarity
Cup Diameter: +0.04mmBore: +0.30mmCup shape differs
Specs used: 5 / missing: 0
Conn 4Low Similarity
Cup Diameter: +0.01mmBore: +0.15mmCup Depth: deep → mediumCup shape data unavailable
Specs used: 4 / missing: 1
Bach 10SLow Similarity
Cup Diameter: -0.08mmBore: +0.15mmCup shape data unavailable
Specs used: 4 / missing: 1
Engelbert Schmid 6Low Similarity
Cup Diameter: +0.12mmBore: -0.10mmCup shape data unavailable
Specs used: 4 / missing: 1
Other Models by Yamaha
Where to Find
This site does not sell mouthpieces. Links are provided for reference only. Please verify prices and availability directly with retailers.