Miniature mono Cardioid (unidirectional) condenser lavaliere/instrument microphone. The microphone is powered with normal "plug-in-power", available on many portable recorders and camcorders. This clip-on lavalier mic provides crisp, full-sounding voice pickup. The AT831 also excels as an instrument mic, especially for pickup of acoustic guitar with the optional AT8444 guitar adapter. Excellent gain before feedback and suppression of background noise. SPECIFICATIONS ELEMENT Fixed-charge back plate, permanently polarized condenser POLAR PATTERN Cardioid FREQUENCY RESPONSE 40-16,000 Hz OPEN CIRCUIT SENSITIVITY -42 dB (7.9 mV) re 1V at Pa IMPEDANCE 250 ohms MAXIMUM INPUT SOUND LEVEL 110 dB SPL, kHz at 1% T.H.D. DYNAMIC RANGE (typical) 85 dB, kHz at Max SPL SIGNAL-TO-NOISE RATIO 65 dB, kHz at Pa WEIGHT (MICROPHONE) 0.1 oz (2.8 g) DIMENSIONS (MICROPHONE) 0.98" (25.0 mm) long, 0.40" (10.2 mm) diameter OUTPUT CONNECTOR Select in option box CABLE 48" cable ACCESSORIES FURNISHED Rotating Clothing clip; AT8116 windscreen AUDIO-TECHNICA CASE STYLE M1