The classic euphonium mouthpiece. Open sound with clear attack and a focused low register. This mouthpiece was originally designed by Denis Wick for the best-selling Yamaha 321 euphonium, and features the unusual combination of a small shank with a large bore and backbore. The first 4AYs were made with a slightly smaller shank than the normal S fitting to help the response and intonation of the 321, but the 4AY is now made with a standard S shank. It is a perfect match for the Yamaha 321.
Cup diameter: 26.00mm.
Rim width: 6.72mm.
Backbore: Large. Small shank.
All Wick euphonium mouthpieces are based on the proven principles of the trombone mouthpieces and offer subtle, yet significant, refinements to the throat and backbore to complement the euphonium’s conical bore.