The BOYA BY-BM3032 is a supercardioid on-camera shotgun microphone offering directional audio capture, adjustable gain, selectable low-cut filter and high frequency boost for video production, vlogging, Youtubers, and sound recordists The BOYA BY-BM3032 is a supercardioid on-camera shotgun microphone offering directional audio capture, adjustable gain(-10dB, 0, +20dB), High Pass Filter ( 0Hz, 75Hz, 150Hz) and broad device compatibility for video production, vlogging, Youtubers, and sound recordists. It also features the safety channel option on right channel which helps you select wanted sound level when you are not sure how loud the audio be captured or some unexpected screeched might be And a selectable 5dB boost button for high frequency can allow to used in some situation, such as using microphone outside with fur windscreen With 3.5mm TRS jack, the microphone can be used to capture audio for camcorders, DSLR, and portable recorders, It can run for approximately 30 hours on two AA batteries For DSLR, camcorder, audio recorder Excellent off-axis signal suppression Super-cardioid directivity Low noise and distortion 20Hz to 20kHz frequency response Safe channel function with right channel Automatic power function Three stage high pass filter (0Hz, 75Hz, 150Hz) Three position level control (-10dB, 0,+20dB) 3.5mm (1/8 inch) mini jack output Including fur windscreen Specifications: Acoustic principle: linear output Polar pattern: supercardioid Frequency response: 20 - 20000Hz Sensitivity: -30 ± 3dB (0dB=1V/Pa at 1dB) Output impedance: 200 Ω Signal to noise ratio: 85dB Gain control: -10dB, 0dB,+20dB Low cut: 0Hz, 75Hz, 150Hz Power supply: 2 x AA batteries (not included) Endurance: 30 hours Size: 209.7 x 103.3 x 50mm Weight: 180g