The Audio-Technica AT8024 is a camera-shoe condenser for DSLRs and camcorders. Switch between line-cardioid mono and internally matrixed mid-side stereo, with a three-position pad and 80 Hz roll-off. A single AA battery powers the microphone. Specifications Element: Fixed-charge back plate, permanently polarized condenser Polar pattern: Line-cardioid mono or LR stereo (mid-side) Frequency response: 40-15,000 Hz Low-frequency roll-off: 80 Hz, 12 dB/octave Open-circuit sensitivity: -37 dB (14.1 mV) re 1V at 1 Pa (mono and LR stereo) Maximum SPL: 128 dB SPL, 1 kHz at 1% T.H.D. Dynamic range: Mono: 106 dB; Stereo: 104 dB, 1 kHz at Max SPL Signal-to-noise ratio: Mono: 72 dB; Stereo: 70 dB, 1 kHz at 1 Pa Battery: One 1.5V AA, 80 hours typical Switches: Mono / M-S stereo; 0 / -10 / -20 dB pad; Flat, roll-off Weight: 114 g (4.0 oz) Dimensions: 172.0 mm (6.77") long, 24.0 mm (0.94") maximum body diameter Cable: Permanently attached 0.2-1 m (7.8"-39.3") coiled cable to right-angle 3.5 mm stereo mini-plug In the Box AT8024 microphone Foam windscreen Fuzzy windscreen AA battery