The MF200s benefit from a redesigned enclosure both inside and out. New, more inert materials have been used to help prevent reflections and standing waves, which Musical Fidelity says results in a "more natural sound". Specially selected and paired 4cm drivers have been punched from a single sheet of material to achieve a constant thickness - a feature designed to let the 'phones to be "neutral and accurate", while providing a "flat, wide frequency response and very low distortion."
 
Impedance: 64ohm +/-10%
Sensitivity: 99dB +/-3dB
Max. Input Power: 30mW
Rated Power: 30mW
Frequency Range: 20Hz ~ 20KHz
Cable Length: 1.3m +/-5%
Driver Dimension: 41mm Dynamic Type
Plug Type: 3.5mm 4P
Impedance: 2.2k ohm, Sensitivity: -40+/-3dB