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. 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. The MH100 is an essential tool for enhanced studio performance and a vital accessory for the professional musician.