Engineered for versatile positioning and extremely flexible performance in boardroom, school, government, house-of-worship and other installed applications, the U857AL features a small-diameter gooseneck with virtually no "memory." Its ultra-flexible, robust design permits easy adjustment into desired shape while resisting inadvertent repositioning. This cardioid condenser gooseneck microphone direct mounts to any 5/8"-27 stand; it is 16.58" long. Equipped with UniGuard innovations that offer unsurpassed immunity from radio frequency interference, the U857AL accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine line cardioid polar patterns. The battery- or phantom-powered microphone also offers an 80 Hz low-cut UniSteep filter that reduces pickup of low-frequency ambient noise.

Features

• Designed for high-quality sound reinforcement, professional recording and broadcasting


• Superior off-axis rejection for maximum gain before feedback


• UniGuard RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)


• Easy-to-adjust, rugged, small-diameter, alternating gooseneck with virtually no "memory" permits quick positioning into desired shape


• UniSteep filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality


• Accepts interchangeable elements to permit angle of acceptance from 90 to 360


• Two-stage foam windscreen yields dramatically improved resistance to P-pops and other breath blasts


• Direct mounts to any 5/8"-27 stand, or to included threaded mounting flange


• Operates on battery or phantom power

Specifications

• ELEMENT: Fixed-charge back plate, permanently polarized condenser


• POLAR PATTERN: Cardioid


• FREQUENCY RESPONSE: 30-20,000 Hz


• LOW FREQUENCY ROLL-OFF: 80 Hz, 18 dB/octave


• OPEN CIRCUIT SENSITIVITY: Phantom: -42 dB (7.9 mV) re 1V at 1 PaBattery: -43 dB (7.0 mV) re 1V at 1 Pa


• IMPEDANCE: Phantom: 200 ohmsBattery: 270 ohms


• MAXIMUM INPUT SOUND LEVEL: Phantom: 133 dB SPL, 1 kHz at 1% T.H.D.Battery: 123 dB SPL, 1 kHz at 1% T.H.D.


• DYNAMIC RANGE (typical): Phantom: 109 dB, 1 kHz at Max SPLBattery: 99 dB, 1 kHz at Max SPL


• SIGNAL-TO-NOISE RATIO: 70 dB, 1 kHz at 1 Pa


• PHANTOM POWER REQUIREMENTS: 11-52V DC, 2 mA typical


• BATTERY TYPE: 1.5V AA/UM3


• BATTERY CURRENT / LIFE: 0.4 mA / 1200 hours typical (alkaline)


• SWITCH: Off, on-flat, on-roll-off


• WEIGHT (MICROPHONE): 4.6 oz (131 g)


• WEIGHT (POWER MODULE): 4.9 oz (139 g)


• DIMENSIONS (MICROPHONE): 16.58" (421.0 mm) long, 0.48" (12.2 mm) head diameter


• DIMENSIONS (POWER MODULE): 3.31" (84.0 mm) H x 2.48" (63.0 mm) W x 0.87" (22.0 mm) D


• OUTPUT CONNECTOR (POWER MODULE): Integral 3-pin XLRM-type


• CABLE: 9.8' (3.0 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor shielded cable with TA3F-type connector


• OPTIONAL INTERCHANGEABLE ELEMENTS: UE-H hypercardioid (100);UE-O omnidirectional (360);UE-UL UniLine (90)


• ACCESSORIES FURNISHED: AT8531 power module; AT8153 two-stage foam windscreen; AT8663 A-mount flange; AT8664 A-mount cable pass-through adapter; battery


• AUDIO-TECHNICA CASE STYLE: M2

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