Warburton Music Products

Year after year the 4M is the best selling top. The #4 diameter (.660") appeals to the greatest number of trumpet players, but diameters 3 and 5 aren't far behind. The M cup is popular because of its versatility and well balanced blend of highs, mids, and lows. The best selling backbore has consistently been #7. This medium-large backbore produces full bodied sound, yet is compact enough not to fail you in the upper register.

Believe it or not, this is a frequently asked question but is founded mainly in curiosity. Don't be fooled into thinking that you will be more normal if you play a 4M/7. Choosing a Warburton mouthpiece should be based upon play-testing combinations in a logical manner. And come to think, have you ever seen a family with 2.2 kids?