TrumCor Trumpet Classic Cup MuteTrumCor Mutes Trumpet Classic Cup Mute Introducing the TrumCor Classic Cup Mute the versatile accessory every trumpet player needs in their collection. Designed for symphonic, studio, or solo playing, this mute offers exceptional tonal flexibility thanks to its adjustable cup. With the ability to adjust the cup, you can easily fine tune your sound to achieve the perfect balance of tone and projection. And, thanks to its responsive and in tune design,