This is probably the best trumpet mute I've played, not to mention the best cup mute! Where to start? As expected from Denis Wick, the quality of this mute is perfect, but it's the sound that will blow you away. What I love most about this mute is the fact that I can get so many different tone colours by adjusting the position of the cup, 1 mm seems to make a huge difference! There's not much back pressure and intonation is perfect. This mute allows me to fit in with ANY group/style of music. Also, if I am stuck, I can simply remove the cup and I have a pretty decent straight mute! Without doubt an essential mute for any trumpeter.