What Kind Of Mouthpiece Does A Euphonium Use?

What Kind Of Mouthpiece Does A Euphonium Use? Examples of trombone mouthpieces commonly used euphonium include Bach 6-1/2AL at the smaller end of the size spectrum, and the larger Bach 5G, 4G and 3G. Others include the Schilke 51 and 51D. What is the best mouthpiece for euphonium? The Bach 6 1⁄2 AL is one