AKG Perception 420 Condenser Microphone and Cable One-inch dual-diaphragm microphone - with three selectable polar patterns for the perfect setting Low-noise electronics and transformerless output - for high dynamic range and high-SPL capability at low distortion Switchable bass-cut filter - eliminates rumble or footfall noise Switchable attenuation pad - for high-SPL applications up to 155dB Designed and engineered in Vienna, Austria - for legendary, pristine AKG sound