Sony MDR-EX1000 - Manual (Page 3)

(GB)
1. For high sound quality
Rich bass and expansive treble:
Large caliber 16 mm diameter dynamic-type driver unit
In the closed-body-type in-ear headphones, a large caliber dynamic driver unit that is the largest in the
industry at 16 mm diameter was used. It enables a wide dynamic range available only with a dynamic
driver unit and playback of a broad range of sound, providing a clear and accurate sound with
incredible balance from the bass to treble range.
Driver unit size comparison
9 mm driver unit 13.5 mm driver unit 16 mm driver unit