The CAD Audio MH210 is a closed back, circumaural, precision built studio headphone. The MH210 is equipped with 40mm neodymium drivers offering extended frequency response while delivering powerful sound. Ultra-soft leather earpads outfitted with high-density memory foam provide hours of fatigue free listening comfort. The MH210W is an essential tool for enhanced studio performance and a vital accessory for the professional musician.Specifications:Frequency Response 15Hz – 22KHzSensitivity 100dB @ 1mWDriver 45mm NeodymiumMaximum Power Rating 1000 mWImpedence 38 ohms