The mechanism within the earphone responsible for reproducing sound is the driver. A quality driver makes for quality sound. This is precisely why Sonique earphones have driver diaphragms coated with Beryllium-4 alloy, which has a very high strength-to-weight ratio and excellent conductivity. Beryllium allows for the earphones to be both strong and lightweight. With their outstanding strength, Sonique earphones resonate to produce clear, high-fidelity sound throughout the audio spectrum. At the same time, Beryllium makes the earphones light enough to ensure the precision needed for fast response times and accurate sound reproduction. Our Beryllium-4 enhanced earphones are not only super-comfortable, but also, they fit tightly enough to effectively block outside noise. Through extensive research, our designers and sound engineers developed an innovative method to use Beryllium to boost response across the entire range between 20Hz to 20 kHz, including sounds above 16 kHz where most earphones are often found lacking. Sonique earphones ultimately provide an amazing experience of dynamic sound immersion.