A QUALITY report / WEIGHT / PRICE exceptional. Everything else has been said. Just a clarification on the power I had read in the comment of a client: the maximum sound level is reached when the power of the reader (smartphone, PC ...) is at the bottom and that the power of "mesh2" is also maximum. To extend the life of mesh2 adjust the sound of your player to 80-90% then adjust the power of mesh2. Cordially