Gear article
Bach Megatone 5G Small Shank Trombone Mouthpiece
The Bach Megatone 5G is a heavy-mass trombone mouthpiece designed to provide a darker sound and greater dynamic range than standard models. Featuring a small shank, a deep cup, and a medium-wide semi-flat rim, it is suitable for both beginners and professional players seeking a sonorous tone.

Overview and Design
The Bach Megatone 5G Small Shank mouthpiece is a specialized brass instrument accessory engineered for tenor trombones. It is distinguished by its substantial exterior mass, which is significantly greater than that of the Bach Classic series. The 5G designation refers to its deep cup and medium-wide semi-flat rim, a configuration widely regarded as a standard for symphonic and solo playing. The mouthpiece is finished in high-quality silver plating, providing a smooth surface for the player's embouchure.
The Megatone Concept
The 'Megatone' design philosophy centres on the addition of extra mass to the outside of the mouthpiece body. This modification is intended to dampen vibrations on the outer surface, focusing the energy into the air column. The result is a darker, warmer tone that resists 'breaking up' or distorting during loud passages. By stabilising the slots between notes, the Megatone allows musicians to push the dynamic limits of the instrument while maintaining a consistent tonal centre.

Sound Character and Performance
Musicians selecting the 5G Megatone typically seek a sonorous and broad sound. The deep cup promotes a rich fundamental, while the extra mass aids in darkening the overall timbre compared to standard-weight mouthpieces. This makes it particularly effective for orchestral settings where a powerful, blending sound is required. The medium-wide semi-flat rim is designed to offer comfort for long playing sessions, reducing fatigue for both developing students and seasoned professionals.
Compatibility and Suitability
This specific model features a small shank, making it compatible with small-bore tenor trombones and certain baritone horns. It is an appropriate upgrade for players using instruments like the Grassi STB850 School Series or older small-bore professional models. While large-bore trombones (such as the Conn 52H) typically require a large shank mouthpiece, the small shank version of the 5G remains a staple for performers who prefer a smaller instrument but desire a symphonic weight of sound.
Comparison to Alternatives
When compared to standard alternatives like the Bach Classic Tuba Mouthpiece 12 or the Gear4Music Coppergate 11C, the Megatone offers significantly more projection and a darker character. While an 11C is generally smaller and easier for high-register jazz playing, the 5G Megatone prioritises depth. For bass trombone players, a larger option like the Denis Wick Classic 2AL would be more appropriate, as the 5G is tailored for the tenor range. For those needing to practice quietly, accessories like the Denis Wick Tuba Practice Mute serve a different functional purpose entirely.
Related gear
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Coppergate 11C Trombone Mouthpiece by Gear4music
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Denis Wick Classic Bass Trombone Mouthpiece 2AL Silver Plated
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£69.00 ($88)Neotech
Neotech Tuba Harness XL Black
£249.00 ($316)Grassi
Grassi STB850 School Series Tenor Trombone
£3,480.00 ($4,420)Conn
Conn 52H Bb/F Tenor Trombone Dual Bore
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Conn 34H Alto Trombone
Frequently asked questions
- What is the primary benefit of the Megatone design?
- The primary benefit is the extra mass on the outside of the mouthpiece, which darkens the sound and allows for greater dynamics without the tone distorting. This provides a more stable and sonorous performance compared to standard-weight models.
- What type of rim does the Bach 5G have?
- The Bach 5G features a medium-wide semi-flat rim. This shape is designed to provide a comfortable surface for the embouchure, helping to reduce fatigue during extended playing sessions.
- Is the 5G Megatone suitable for beginners?
- Yes, it is designed for both beginners and professionals. While beginners usually start on smaller mouthpieces like a 7C or 11C, the 5G is an excellent choice for a student who is ready to develop a fuller, more symphonic sound.
- What shank size does this specific mouthpiece use?
- This model uses a small shank. It is designed for small-bore tenor trombones and is not compatible with large-bore symphonic trombones unless an adapter is used.
- How does the cup depth affect the sound?
- The 5G has a deep cup, which contributes to a rich and sonorous tone. Deep cups generally produce more low-frequency overtones, making the instrument sound warmer and broader.
- What is the finish of the Bach Megatone 5G?
- This mouthpiece is finished with silver plating. Silver plating is the industry standard for its durability, smooth feel on the lips, and bright aesthetic.
- Can I use this mouthpiece on a Conn 52H trombone?
- The Conn 52H is a dual-bore tenor trombone that typically requires a large shank mouthpiece. You would need to verify the receiver size of your specific instrument, as this 5G Megatone is the small shank version.
- How does the Megatone 5G compare to the Coppergate 11C?
- The Coppergate 11C is a smaller mouthpiece generally used for a brighter sound and easier high-register playing. The Bach Megatone 5G is larger, heavier, and designed for a much darker and more powerful symphonic tone.
- Does the Megatone design make the mouthpiece heavier?
- Yes, the Megatone series features significantly more external mass than the Bach Classic series. This weight is specifically added to help darken the sound and increase dynamic stability.
- Is the Bach Megatone available in other sizes?
- Yes, the Bach Megatone range is available in various sizes to suit different playing styles and instrument types, though the 5G is one of the most popular configurations for tenor trombone.
- Is this mouthpiece appropriate for jazz or classical music?
- The 5G is most commonly used in classical and symphonic settings due to its deep, dark tone. However, jazz players who prefer a very warm, 'ballad' style of playing may also find it useful.
- What is the typical price for a Bach Megatone 5G?
- The typical retail price for this mouthpiece is approximately £130. This reflects its status as a professional-grade accessory with specialized heavy-mass construction.
