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Clich here . . . .


The past three years of trials on all Piston Valved Sopranos, Cornet, Trumpets, Flugel Horns and Tenor Horns has clearly shown that replacing a normal Valve Cap Bottom with a Heavy Bottom Cap on the 1st or 3rd Valve of Sopranos, Cornets, Trumpets, Flugel Horns  and Tenor Horns, note-centering, sound projection and a general greater ease of playing. is achieved. Equally so with the 4th Valve Cap on Euphoniums. 

The Science behind the HBC is that it Adds Mass which Attenuates the Harmonic Partials, but the testing one yourself is the real proof.

Try one on our Without Obligation 1 Month Approval facility worldwide to see for yourself; anywhere in the world.


Our HBCs are made in the UK to the closest of tolerances by computer-controlled lathes and diamond cutters ensuring the highest quality. Every thread is machined specifically to suit each make and model of the various instruments we mention.

Each HBC is highly polished and Electro-plated 

with 24 Microns of Bright Silver Plating.