DJTECH HPM2300 Recording Studio Equipment .High-definition bass and super-transparent highs.Ultra-high dynamic range.High-efficiency cobalt capsule.Single-sided cord with oxygen-free copper wires .Rotating, reversible round-shaped ear cups.High-quality components and exceptionally rugged construction ensure long life .Capsule diameter: 40MM.Frequency Response: 50 Hz-20 kHz.Max Power Handling: 100 mW .Impedance: 32 Ohm .Sensitivity: 100 dB @ 1 kHz .Cord length: 2.0 m.Connector: 1/4" TRS Stereo Jack plus 1/4" TRS Adaptor