The ATH-M20x professional monitor headphones are a great introduction to the critically acclaimed M-Series line. Modern design and high-quality materials combine to deliver a comfortable listening experience, with enhanced audio and effective isolation. An excellent choice for tracking and mixing. Features - Advanced build quality and engineering - 40 mm drivers with rare earth magnets and copper-clad aluminum wire voice coils - Tuned for enhanced low-frequency performance - Circumaural design contours around the ears for excellent sound isolation in loud environments - Convenient single-side cable exit - Designed for studio tracking and mixing Specifications - Type : Closed-back dynamic - Driver Diameter : 40 mm - Magnet : Neodymium - Voice Coil : Copper-clad aluminum wire - Frequency Response : 15 - 20,000 Hz - Maximum Input Power : 700 mW at 1 kHz - Sensitivity : 96 dB - Impedance : 47 ohms - Weight : 190 g (6.7 oz), without cable and connector - Cable : 3.0 m (9.8 #39;), straight, left-side exit - Accessory Included : 6.3 mm (1/4 #34;) snap-on adapter