UniLine® Condenser Hanging Microphone

$449 + shipping (includes gst)

Equipped with Audio-Technica’s UniLine® line-cardioid element with a tightly focused 90º acceptance angle, the U853AU features UniGuard® innovations that offer unsurpassed immunity from radio frequency interference. The battery- or phantom-powered microphone accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine® line cardioid polar patterns. It also offers an 80 Hz low-cut UniSteep® filter that reduces pickup of low-frequency ambient noise.

  • Designed for suspension over choirs, instrumental groups and theater stages
  • 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)
  • 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°
  • Low-profile design with low-reflectance finish for minimum visibility
  • Operates on battery or phantom power

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


Phantom: 200 ohms Battery: 270 ohms

Maximum Input Sound Level

Phantom: 130 dB, 1 kHz at 1% T.H.D. Battery: 120 dB SPL, 1 kHz at 1% T.H.D.

Dynamic Range

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)


Off, on-flat, on-roll-off


25.0′ (7.6 m) long (permanently attached to microphone), 0.13″ (3.2 mm) diameter, 2-conductor, shielded cable with TA3F-type connector


AT8154 two-stage foam windscreen; AT8451 steel hanger; AT8531 power module; AT8438 5/8″-27 stand adapter; battery

Weight (Microphone)

1.1 oz (30 g)

Weight (Power Module)

4.9 oz (139 g)

Dimensions (Microphone)

6.14″ (156.0 mm) long, 
0.48″ (12.2 mm) 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

Optional Interchangeable Elements

UE-C cardioid (120°); 
UE-H hypercardioid (100°); 
UE-O omnidirectional (360°)

Polar Pattern
Frequency Response
U853aU Spec Sheet (PDF) Download
U853aU Submittal Sheet (PDF) Download

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