Free shipping on most orders above $99* Details

Same-day Shipping for most orders before 10AM PST

Trusted by Professionals Since 1991

Audio-Technica U851RbO Omnidirectional Condenser Boundary Microphone, Black

Audio-Technica | SKU: ATH-U851RBO
$23900

Free Shipping

Estimated Shipping Widget will be displayed here!

Condition: New


Audio-Technica U851RbO Omnidirectional Condenser Boundary Microphone, Black

The phantom-powered U851RbO omnidirectional condenser boundary microphone offers outstanding speech intelligibility and transparent sound quality for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations. The omnidirectional microphone is equipped with a PivotPoint rotating output connector, UniSteep filter and UniGuard RFI-shielding technology. It accepts interchangeable condenser elements, available separately, in cardioid and hypercardioid polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851RbO is equipped with self-contained electronics, eliminating the need for an external power module. Threaded inserts on the bottom of the microphone allow it to be mounted with screws for increased security.

Key Features

  • Omnidirectional condenser boundary microphone
  • Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
  • Superior off-axis rejection for maximum gain before feedback
  • PivotPoint rotating output connector allows cable to exit from either the rear or the bottom of the microphone
  • Small-diameter UniPoint element near boundary eliminates phase distortion and delivers clear, high-output performance
  • Available interchangeable elements permit angle of acceptance from 100 deg to 360 deg
  • UniGuard RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
  • Self-contained electronics eliminate need for external power module
  • Heavy die-cast case and non-slip silicone foam bottom pads minimize coupling of surface vibration to the microphone
  • Low-profile design with low-reflectance finish for minimum visibility
  • Threaded inserts on bottom of microphone allow it to be mounted with screws for increased security

Technical Specifications

ELEMENT
Fixed-charge back plate, permanently polarized condenser
POLAR PATTERN
Omnidirectional
FREQUENCY RESPONSE
20-20,000 Hz
LOW FREQUENCY ROLL-OFF
80 Hz, 18 dB/octave
OPEN CIRCUIt'sENSITIVITY
-31 dB (28.2 mV) re 1V at 1 Pa
IMPEDANCE
50 ohms
MAXIMUM INPUT SOUND LEVEL
132 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical)
111 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
73 dB, 1 kHz at 1 Pa, A-weighted
PHANTOM POWER REQUIREMENTS
11-52V DC, 4.4 mA
SWITCH
Flat, roll-off
WEIGHT
253 g (8.9 oz)
DIMENSIONS
0.91" (23.0 mm) H x 3.30" (83.9 mm) W x 4.25" (108.0 mm) D
OUTPUT CONNECTOR
Microphone: TB3M-type
Cable: 3-pin XLRM-type
CABLE
25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
OPTIONAL INTERCHANGEABLE ELEMENTS
UE-C cardioid (120 deg)
UE-H hypercardioid (100 deg)
ACCESSORY FURNISHED
Soft protective pouch

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Audio-Technica

Audio-Technica U851RbO Omnidirectional Condenser Boundary Microphone, Black

$23900

Free Shipping

Audio-Technica U851RbO Omnidirectional Condenser Boundary Microphone, Black

The phantom-powered U851RbO omnidirectional condenser boundary microphone offers outstanding speech intelligibility and transparent sound quality for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations. The omnidirectional microphone is equipped with a PivotPoint rotating output connector, UniSteep filter and UniGuard RFI-shielding technology. It accepts interchangeable condenser elements, available separately, in cardioid and hypercardioid polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851RbO is equipped with self-contained electronics, eliminating the need for an external power module. Threaded inserts on the bottom of the microphone allow it to be mounted with screws for increased security.

Key Features

Technical Specifications

ELEMENT
Fixed-charge back plate, permanently polarized condenser
POLAR PATTERN
Omnidirectional
FREQUENCY RESPONSE
20-20,000 Hz
LOW FREQUENCY ROLL-OFF
80 Hz, 18 dB/octave
OPEN CIRCUIt'sENSITIVITY
-31 dB (28.2 mV) re 1V at 1 Pa
IMPEDANCE
50 ohms
MAXIMUM INPUT SOUND LEVEL
132 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical)
111 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
73 dB, 1 kHz at 1 Pa, A-weighted
PHANTOM POWER REQUIREMENTS
11-52V DC, 4.4 mA
SWITCH
Flat, roll-off
WEIGHT
253 g (8.9 oz)
DIMENSIONS
0.91" (23.0 mm) H x 3.30" (83.9 mm) W x 4.25" (108.0 mm) D
OUTPUT CONNECTOR
Microphone: TB3M-type
Cable: 3-pin XLRM-type
CABLE
25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
OPTIONAL INTERCHANGEABLE ELEMENTS
UE-C cardioid (120 deg)
UE-H hypercardioid (100 deg)
ACCESSORY FURNISHED
Soft protective pouch

View product