Audio Technica ATH-M40X Closed Back Professional Monitor Headphones Black Audio-Technica ATH-M40X wired headphones are ideal for professional studio tracking, mixing and monitoring. Experience superior sound isolation and flat response reproduction, allowing you to enjoy crystal clear, accurate audio across the entire frequency range. With a closed back, collapsible design, the M40x provides style and substance for the studio - pick up, plug in and play with complete reliability. Features: ? Cutting-edge engineering and robust construction ? 40 mm drivers with rare earth magnets and copper-clad aluminum wire voice coils ? Tuned flat for incredibly accurate sound monitoring across the entire frequency range ? Circumaural design contours around the ears for excellent sound isolation in loud environments ? 90 swiveling earcups for easy, one-ear monitoring ? Professional-grade earpad and headband material delivers more durability and comfort ? Collapsible for space-saving portability ? Detachable cable (includes 1.2 m - 3.0 m coiled cable and 3.0 m straight cable) Specifications: Microphones Closed-back dynamic design ? 40mm driver diameter ? Frequency response: 15 - 24,000 Hz ? Maximum input power: 1,600 mW @ 1KHz ? Sensitivity: 98 dB ? Impedance: 35 ohms ? Weight: 240g (without cable) ? Cable options: 1.2m-3m coiled, 3m straight cables ? Connector: Gold-plated stereo 1/8? (3.5 mm) connector with strain relief ? Detachable cable: Yes ? Magnet type: Neodymium ? Voice Coil: CCAW (Copper-clad aluminum wire) ? Folding/collapsible: Yes ? Accessories included: Screw-on 1/4? adapter, pouch