The SM7A is an improved version of the popular SM7 cardioid dynamic microphone. Especially engineered for speech and music, the SM7A has a frequency response of 50Hz to 20kHz with minimum coloration to off-axis sound sources. Improvements include a redesigned humbucking coil that provides better shielding from hum and noise emitted by computer monitors, fluorescent and neon lights and other electronic/digital equipment common to modern recording and broadcast studios.