The Asymmetric 544 is a 3C+ trumpet mouthpiece. The 544 trumpet mouthpiece design produces a little brighter sound than other orchestral mouthpieces without losing it's versatility. The plus means easier high-register, more endurance and several additional semitones of high range. Like the other Asymmetric mouthpieces, the throat is open (.150") for a bigger sound, but not to the point of adversely affecting endurance or intonation. Additionally, the cup and backbore have been balanced. This is a trumpet mouthpiece of choice for all-around applications.