With its super-cardioid polar pattern, line gradient acoustics, and exceptional isolation, the Aputure V-Mic D1 is a directional condenser microphone that effortlessly eliminates unwanted background noise, vibrations, and low frequencies to provide you with precise voice input. Qualities Super-cardioid polarography Minimal self-noise Low-cut filter Better separation from the camera system Better RF Immunity Windscreen and windscreen Warning of low power 1/4-inch and cold shoe mounts Details SPL: 134 dB THD: less than 0.5 percent V-Mic D1 model Wired communication 200 is the output impedance to noise. 74dB is the ratio. 114dB is the dynamic range. The super-cardioid pattern Regularity 20Hz to 20,000Hz is the range. Principle of a transducer: back electric condenser DC power 3.0V and 3V AAA Tolerance: -30 ± 2 dB 255g in weight (no battery) Size of package: 23 x 15 x 6 cm