With two dedicated dynamic drivers m200 hi fi earphones allow you to enjoy the most delicate nuances of the original recordingr combining a 10mm lf driver and a 55mm neodymium mfhf driver kefrsquos unique dual dynamic driver ddd array creates an immaculately detailed and engagingly natural sound right across the frequency range with the lf chamber connected to the light aluminium housing for tight resonance free bassr the ddd is a full range two way system pairs a 55mm neodymium mf