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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 90° 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 90° 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: 1.5V AA/UM3
- BATTERY CURRENT / LIFE: 0.4 mA / 1200 hours typical
(alkaline)
- SWITCH: Off, on-flat, on-roll-off
- WEIGHT (MICROPHONE): 5.0 oz (141 g)
- WEIGHT (POWER MODULE): 4.9 oz (139 g)
- DIMENSIONS (MICROPHONE): 16.81" (427.0 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-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
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