TNU1003 Features: * Headphone * Specifically designed for digital program materials * High-performance drivers and low-mass diaphragms * Maximized power handling capability * Excellent isolation and powerful bass * Closed-back dynamic * Driver diameter: 40 mm * Diaphragms only 25 microns thick * Impedance: 32 ohms * Weight : 5.0 oz (140 g) * Cable: 9.8" (3 m) * Connector: 3.5 mm stereo mini-plug Includes: * 0.25" (6.3 mm) Phone plug adapter included * Included: 0.25" (6.3 mm) Plug adapter Specifications: * Frequency response: 20 - 21,000 hz * Maximum input power: 100 mw * Sensitivity: 100 dB