Minuendo is an advanced pair of earplugs that provide natural sound in a wide protective range of sound levels. By manually adjusting the lever, the earplugs can decrease the level by 7 to 25dB while keeping the sound clear. With patented membrane technology and micrometer precision craftsmanship, there is no frequency degradation like the muffled sound of existing foam earplugs. The acoustic earplugs come with a range of ear tips in different materials and varying sizes to ensure both comfort and  prevention of sound leakage.