KZ-EDA Professional anti-fever combination earphone Strong Bass/Smooth mid-frequency/Crystal high-frequency EDA was carefully tuned by KZ acoustics team for many times. For the price of one pair of earphone, you can get three pairs of earphone in three different styles to meet your desired listening needs. Rigorous tuning bring a feast to your ears. Accurate acoustic adjustment scheme, to maximize the potential of dynamic unit, to ensure that it can perform at its maximum level. Black/Low-frequency version Transparent/Balanced Version Cyan / High-frequency version We optimized the core components of EDA for each frequency band, so that it has excellent performance in different frequency bands * 0.15MM magnetic gap brings stronger output performance and lower distortion rate. * Customized 0.035MM diameter loop makes the vibration frequency of the driver more stable and efficient. * Single temperature-controlled forming diaphragm with a thickness of 4.8 microns reduces the vibration attenuation of the driver and improves the transient performance of EDA. * The middle frame of EDA is made of high-rigidity metal material, which is wear-resistant, scratch-resistant and not easy to deform. * Ergonomic design brings about 26dB passive noise cancellation.Imported resin shell, reliable and durable. * Users can replace original cable with a Bluetooth cable into a wireless earphone, or replace with upgrade cable to change the sound quality.