Rode NTG 4 Shotgun Microphone with Digital Switches dslr stabilizer This does not change the DRHC20001400 This does not change the functionality of the unit down and cross conversion capabilities allow effortless switching between HD and UHD workflows 10 dB Pad: Attenuates the microphone input to allow for the recording of loud sounds without clipping 75 Hz High Pass Filter: Reduces low frequency and infrasonic rumble from HVAC systems indoors or street traffic outdoors from over powering the recording High Frequency Boost: Restores some of the high frequency content that is often lost when a blimp or furry windshield is placed over the microphone and improves the intelligibility of recorded speech a sensitivity of 32 dB re 1 V Pa