Here's a short comparison between several trumpet mutes, straight mute, cup mute and wah-wah mute, of several brands.
The comparison is not very fair because of the materials difference, but maybe informative if you going to buy a mute.
All materials are properties of their owners, and are used here for informative and entertainment purposes.
![](https://i.ytimg.com/vi/hyrdxvvLZQM/maxresdefault.jpg)