I bought this to act as a smaller mouthpiece than my usual 3C for the Bflat trumpet. The 7C I'd used before was too dull sounding and I needed an equivalent. The Schilke 11 feels very similar to the 7C but with a lovely smooth, rich sound. It's lucky that it feels so similar to the 11Ax I use with my Schilke Piccolo, making transferring from one to the other that much easier. Well made, as ever, and comfortable on the lips.