Transparent uppers/mids balanced by rich low-end qualities combine with advanced acoustic engineering for extensive performance capabilities and highest quality. Dual-diaphragm capsule design maintains precise polar pattern definition across the full frequency range of the microphone. The 2-micron-thick, vapor-deposited gold diaphragms undergo a five-step aging process so that the optimum characteristics achieved remain constant over years of use. Three switchable polar patterns: omni, cardioid, figure-of-eight. Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients. State-of-the-art surface-mount electronics ensure compliance with A-T's stringent consistency and reliability standards. Switchable 80 Hz hi-pass filter and 10 dB pad. Includes: AT8449 shock mount; microphone dust cover; protective case.Element: CondenserPolar Pattern: Cardioid, Omni, Figure-of-eightFrequency Response: 20 - 18,000 HzOpen Circuit Sensitivity: -36 dB (15.8 mV), re 1V at 1 PaImpedance: 100 ohmsMaximum Input Sound Level: 149 dB SPL, 1 kHz at 1% T.H.D.Signal to Noise Ratio: 77 dB, 1 kHz at 1 PaDynamic Range (Typical): 132 dB, 1 kHz at Max. SPLPhantom Power Requirements: 48V (±4V)Switches: Polar pattern; 10 dB pad; roll-offLow Frequency Roll-off: 80 Hz, 12 dB per octaveWeight: 18.0 oz (510 g)Output Connector: XLRM-type