The Mercer & Barker GW4 euphonium mouthpiece is a classic, all-rounder model designed to deliver the rich, warm British euphonium sound with modern precision and stability. This 26.0 mm "4-size" piece targets advancing students through professional players who need one versatile primary mouthpiece that performs flawlessly in solo, brass band, and wind band settings.
The GW4 is meticulously crafted to offer an ideal blend of comfort, balance and weight, ensuring it outperforms similar designs across the whole spectrum of euphonium playing. It features a cup diameter of 26.00 mm and a rim width of 6.70 mm, providing a secure, comfortable feel that enhances endurance without restricting flexibility or clarity of articulation.
With a throat of 7.38 mm, the mouthpiece promotes a resonant, singing tone and a broad, supportive low register, while the precise internal design ensures secure intonation in the upper register. The GW4 is positioned as Mercer & Barker’s classic euphonium design in a medium-large size, crafted for tone and pitch stability rather than extreme specialization.
The GW4 sits squarely in the popular "4" size class, making it a natural fit for players accustomed to models such as the Denis Wick SM4/4AL family. For players seeking improved comfort, pitch stability, and a consistent response without a major size change, the Mercer & Barker GW4 is a compelling modern alternative. The mouthpiece is suitable for high school and university euphonium players, as well as adult amateurs and brass band musicians, providing improved comfort, intonation, and a sound quality perfect for contest and solo literature.
Specifications:
Inner Diameter: 26mm/1in
Rim Width: 6.7mm/.26in
Rim Contour: Slightly wider with rounded inner edge
Throat: 7.38mm/.3in
Cup: Medium large
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