Overview
Ideal for conference centers, boardrooms, courtrooms, houses of worship, and other installed applications, the U857Q is designed to plug directly into a panel- or desk-mounted XLRF-type connector. This cardioid condenser quick-mount gooseneck microphone offers unsurpassed immunity from radio frequency interference thanks to Audio-Technica’s UniGuard® innovations. The 14.47” long microphone features an ultra-flexible small-diameter gooseneck and accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine® line cardioid polar patterns. Equipped with self-contained electronics, the 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
- Self-contained electronics eliminate need for external power module
- 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
- Quick-mount design with 3-pin XLRM-type connector insert at base plugs into any standard XLRF-type surface or cable connector
- Included shock mount attenuates noise, shock and vibration transmitted through the mounting surface
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 | –39 dB (11.2 mV) re 1V at 1 Pa |
| IMPEDANCE | 250 ohms |
| MAXIMUM INPUT SOUND LEVEL | 139 dB SPL, 1 kHz at 1% T.H.D. |
| DYNAMIC RANGE (typical) | 115 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 |
| SWITCH | Flat, roll-off |
| WEIGHT | 5.1 oz (144 g) |
| DIMENSIONS | 14.37" (365.0 mm) long, 0.48" (12.2 mm) head diameter, 0.74" (18.9 mm) base diameter |
| OUTPUT CONNECTOR | Integral 3-pin XLRM-type |
| OPTIONAL INTERCHANGEABLE ELEMENTS | UE-H hypercardioid (100°); UE-O omnidirectional (360°); UE-UL UniLine® (90°) |
| ACCESSORIES FURNISHED | AT8153 two-stage foam windscreen; AT8662 shock mount |
| AUDIO-TECHNICA CASE STYLE | M34 |
