EST stands for Electrostatic driver unit.EST Driver IEMs provide superior sound quality due to their innovative electrostatic transducer technology.The drivers offer a high-definition listening experience with detailed sound and precise clarity.Offering an impressive frequency range and low distortion, EST IEMs let you pick out instrumental nuances and subtle changes in the music.We have partnered with the top names in the industry Moondrop, Kinera, DUNU, and more offering you a wide range of in-ear monitors with EST Driver configurations. Earphonecart brings you a wide range of IEMs with EST drivers delivering highly-resolving sound tuning.Choose your favorite from premium earphones.