CHI Brass EEb Bass 1 Brass Band Bass (Tuba) Mouthpiece

The Professional Brass Band EEb Mouthpiece

The CHI Brass EEb Bass 1 has been purpose-built for the unique demands of the British Brass Band tradition. Designed to produce the warm, singing sound that defines the EEb Bass while maintaining exceptional clarity and control, it offers the efficiency and flexibility required for today's demanding contest repertoire.

Its carefully balanced design allows players to produce a broad, resonant tone with quick response, effortless articulation, and excellent tonal focus throughout the instrument's complete range. Whether performing lyrical solos, technical passages, or providing the characteristic warmth that supports the entire band, the EEb Bass 1 delivers dependable consistency with minimal effort.

Performance Characteristics

The EEb Bass 1 promotes effortless airflow and a stable tonal center while providing the quick response and flexibility that British brass band performers demand. Its medium bowl cup and comfortable rounded rim encourage endurance during long rehearsals and contests without sacrificing projection or musical expression.

Sound Characteristics

• Rich, warm brass band tone

• Singing upper register

• Responsive articulation

• Strong tonal core

• Excellent flexibility

• Stable intonation

• Broad dynamic range

• Consistent response throughout all registers

• Efficient airflow with excellent endurance

• Beautiful blend within the brass band

Recommended For

Ideal Applications

• Brass Band

• Solo Performance

Ideal Instruments

• Compensating EEb Basses

• Other small receiver tubas

Specifications

• Rim - Jacobs 2 well rounded

• Cup - medium bowl

• Overall Length : 3.8″ 96.52mm

• Max OD: 1.87″    47.4498 mm

• ID at 0.060″ into the cup: 1.287″    32.7 mm

• Throat: 0.317″     8.0518 mm

• Shank: Special Brass Band Shank .522

• Heavyweight Shell 

• If Gold Plate desired please email us for current market pricing

• Gold, Special Order or marked or damaged Mouthpieces are not returnable

Why Choose CHI Brass?

Every CHI Brass mouthpiece is manufactured to exacting standards in the U.S. with a focus on consistency, response, comfort, and tonal beauty. Developed in collaboration with leading performers and educators, CHI Brass mouthpieces are trusted by musicians around the world for their precision, reliability, and exceptional musical results.

Built for the Modern Brass Band Performer

The EEb Bass 1 delivers the warm, centered sound, effortless response, and musical flexibility that today's brass band musicians expect—providing the confidence to perform at the highest level from the first note to the final chord.