PreSonus HD9 Professional Closed Back Monitoring Headphones

Closed back, circumaural acoustic design with two-way, 180° cup rotation Tailored frequency response with accurate lows (10 Hz to 26 kHz) High-power handling (1,800 mW @ 40Ω, 900 mW per channel) 45 mm dynamic, neodymium drivers 10 foot (3m), straight, single-sided cable with 1/8 inch connector, gold-plated ¼ inch adapter, and headphone storage bag