The BOYA BY-SM80 is a stereo X/Y condenser microphone that delivers broadcast quality stereo sound to your DSLR camera, video camera, or audio recorder. This microphone provides greater control of your audio than the internal mics on DSLR camera, video cameras, or digital recorders.
Frequency range: 35Hz-18KHz
Signal/Noise: 78dB or more
Output Impedance: 200Ω or less
Reception sensitivity: -33dB ±3dB / 0dB=1V/Pa,1KHz
Power requirement: 2*AAA battery