The CAD Audio MH100 is a closed-back, midsized, precision built headphone. The MH100 is equipped with 40mm neodymium drivers offering extended frequency response while delivering detail and clarity. Designed for comfort and isolation the MH100 will outperform expectations. Sensitivity: 98dB Impedance: 38Ω Driver: 40mm Neodymium Power Handling: 500mW