Engineered to produce pro-quality sounds, the Azden Powered Shotgun Video Microphone with +20dB Boost is the same used by Azden’s professional shotgun microphones (SGM-250 and SGM-250P) and is capable of capturing broadcast-quality sound. The acoustically tuned slots of the shotgun barrel give the SMX-15 its super-cardioid polar pattern which allows you to focus on sound in front of the camera while reducing the capture of extraneous noise from the rest of the environment.