Samson CH700 Closed-Back Studio Headphones Headphone Type: Closed Driver Size: 40mm, Plug Type: 1/8-inch to 1/4-inch adapter Fit Style: Circumaural, Cable Type: Straight Frequency Response: 20Hz-22kHz, Cord Length: Approximately 3 meters Impedance: 64 ohms, Weight: 1.1 pounds