Suffering dacouphènes I have to wear hearing protection every time I go on stage. I've tested so far. This model is the best: unobtrusive because it does not protrude from the ear, it fits easily into the duct because the cone is small, while many others are enormous. Mitigation seemed identical to the models Acoufun the technical characteristics of balanced filtration across the entire sound spectrum is called unique. By cons I have not seen the interest of the small plug of modulation because in environments where I had to somehow seek maximum occlusion. And it is easier to remove the complete protection rather than the small cap to be able to discuss with its neighbor. The downsides: The case is a little "cheap" given the price (compared to the aluminum model made Acoufun) and the plastic neck cord is not worth a true fiber cord.