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U857AU

UniLine® Condenser Adapter-Mount Gooseneck Microphone
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Details

Audio-Technica’s U857AU incorporates the most essential ingredients for quality sound reproduction for a wide range of installed applications. Equipped with A-T’s UniLine® line-cardioid element with a tightly focused 90º acceptance angle, the U857AU features a small-diameter gooseneck with virtually no “memory.” Its ultra-flexible, robust design permits easy adjustment into desired shape while resisting inadvertent repositioning. The 16.81"-long UniLine® condenser direct mounts to any 5/8"-27 stand. Featuring UniGuard® innovations that offer unsurpassed immunity from radio frequency interference, the U857AU 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.

 

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

 

    • UniLine™ polar pattern provides narrow 90º acceptance angle

 

    • 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 Line Cardioid
FREQUENCY RESPONSE 30-20,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY Phantom: –38 dB (12.5 mV) re 1V at 1 Pa Battery: –39 dB (11.2 mV) re 1V at 1 Pa
IMPEDANCE Phantom: 200 ohms Battery: 270 ohms
MAXIMUM INPUT SOUND LEVEL Phantom: 130 dB SPL, 1 kHz at 1% T.H.D. Battery: 120 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (TYPICAL) Phantom: 110 dB, 1 kHz at Max SPL Battery: 100 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO 74 dB, 1 kHz at 1 Pa
PHANTOM POWER REQUIREMENTS 11-52V DC, 2 mA typical
BATTERY TYPE Approximately 30 hours (1 alkaline AAA battery);15 hours (1 nickel metal hydride NiMH rechargeable AAA battery)
BATTERY CURRENT / LIFE 1.5V AA/UM3
SWITCH Off, on-flat, on-roll-off
WEIGHT (MICROPHONE) 4.9 oz (139 g)
WEIGHT (POWER MODULE) 16.81" (427.0 mm) long, 0.48" (12.2 mm) head diameter
DIMENSIONS (MICROPHONE) AT8560 power supply; AT8447 shock mount for 5/8"-27 threaded stands; rack-mount adapters for power supply; protective mic carrying case
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-C cardioid (120°); UE-H hypercardioid (100°); UE-O omnidirectional (360°)
ACCESSORIES FURNISHED AT8531 power module; AT8154 two-stage foam windscreen; AT8663 A-mount flange; AT8664 A-mount cable pass-through adapter; battery
AUDIO-TECHNICA CASE STYLE M33

Configurations

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U857AU Frequency Response

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