Crescendo PRO Acoustic 15

Acoustic 15 (a.k.a. Crescendo Woodwind) has been designed specifically for musicians and music lovers.
The patented membrane filter technology provides the core of protection ensuring clarity of sound with full music dynamic whilst allowing speech to be heard. Crescendo Acoustic 15 provides you a tuned, flat attenuation response so all frequencies are reduced by the same level, which makes it the best high fidelity hearing protection on the market.