Award-winning custom driver Our team of engineers worked hard to build a remarkable custom driver optimized to handle all music genres. Developed for both depth and balance, the award-winning JAYS custom driver delivers a deep bass along with warm, natural-sounding vocals for a powerful music experience. High-performance microphone Experience amazing, crystal-clear speech quality with built-in echo cancellation and noise reduction. Powered by MEMS technology, a-JAYS Four+ is designed with a top-of-the-line microphone sporting an acoustic sensor, a low-noise input buffer, and an output amplifier. Unlike most microphones, which degrade over time, we use mic-magnets that recharge each time your earphones are plugged in, ensuring high-performance audio for a long time to come.