Audio-Technica U891RB Cardioid Condenser Boundary Microphone with Switch, RGB LED & Integral Power Module, Phantom Power Only, Black

SKU: ATU891RB MFR: U891RB
Earn VIP Reward Points

Key Features

  • Capture pristine audio with this cardioid condenser boundary microphone for clear recordings.
  • Enjoy versatile use with switchable touch on/off and momentary modes for adaptable control.
  • Minimize unwanted noise using the 80 Hz roll-off feature, ensuring a cleaner sound profile.
  • Rely on the U891RB's robust build quality for consistent performance in any recording setting.
  • Achieve optimal sound with a wide 20-20,000 Hz frequency response for detailed audio capture.
  • Integrate seamlessly with phantom power; this condenser microphone enhances any setup effortlessly.
See More Product Details
Special Order?Estimated to Ship: 09/03/2025
Free Shipping

See Options

1

Protect your gear with Adorama Protect.* Learn more

1 Year

$39.99

2 Year

$69.99

3 Year

$79.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Audio-Technica U891RB Specifications

  • Color

    Black

  • Element

    Fixed-charge back plate, permanently polarized condenser

  • Polar Pattern

    Cardioid

  • Frequency Response

    20-20,000 Hz

  • Low Frequency Roll-Off

    80 Hz, 18 dB/octave

  • Open Circuit Sensitivity

    -34 dB (19.9 mV) re 1V at 1 Pa

  • Impedance

    50 ohms

  • Maximum Input Sound Level

    130 dB SPL, 1 kHz at 1% T.H.D.

  • Dynamic Range (Typical)

    104 dB, 1 kHz at Max SPL

  • Signal-To-Noise Ratio

    68 dB, 1 kHz at 1 Pa, A-weighted

  • Phantom Power Requirements

    11-52V DC, 9.3 mA

  • Switches

    Activation: on/off
    Switch function: touch on/off, momentary on, momentary off
    LED Color: mic on, mic off
    Flat, roll-off

  • Output Connector

    Microphone: TB3M-type
    Cable: 3-pin XLRM-type

  • Cable (L x Diameter)

    25.0' x 0.13" (7.6m x 3.2mm), 2-conductor, shielded cable with TA3F and XLRM connectors

  • Optional Interchangeable Elements

    UE-H hypercardioid (100 Degree )
    UE-O omnidirectional (360 Degree )

  • Accessory Furnished

    Soft protective pouch

  • Dimensions (H x W x D)

    0.91 x 3.30 x 4.25" (23.0 x 83.9 x 108mm)

  • Weight

    8.9 oz (253g)

  • UPC Code

    4961310146658

About Audio-Technica U891RB

Over the course of your professional audio recording and broadcasting endeavors, the Audio-Technica U891RB Cardioid Condenser Boundary Microphone stands out as a sophisticated and reliable choice. This durable microphone is designed with a sleek black finish, ensuring it not only performs exceptionally but also maintains a stylish presence in any conference room, boardroom, or recording studio.

The U891RB features a touch-sensitive capacitive-type user switch, offering unparalleled flexibility with three selectable modes: touch on/off, touch to talk, and touch to mute. This functionality allows for seamless audio control during live events or in fixed installations. The microphone's advanced phantom power capabilities ensure consistent performance without the need for an external power module, streamlining your setup and reducing clutter.

Equipped with Audio-Technica's proprietary PivotPoint rotating output connector, the U891RB can be easily adjusted to suit the specific requirements of your recording environment. Additionally, the two-state RGB LED status indicator provides clear visual cues for the operational mode, enhancing user interaction and control.

The U891RB is engineered with UniGuard technology, offering unmatched immunity to radio frequency interference, a common challenge in today's electronically dense environments. For those seeking versatility, additional interchangeable elements are available separately, allowing you to customize the microphone with hypercardioid or omnidirectional polar patterns to suit various acoustic conditions.

An integrated 80 Hz low-cut UniSteep filter effectively reduces the pickup of unwanted low-frequency ambient noise, ensuring that your recordings are crisp and clear. The microphone's robust die-cast case, combined with silicon foam bottom pads, significantly minimizes the transmission of surface vibrations, preserving the integrity of the audio signal.

For added security, especially in public or multi-use spaces, the U891RB includes threaded inserts on the bottom, enabling it to be securely mounted with screws. This feature ensures that the microphone remains in place, providing consistent audio capture and reducing the risk of tampering or accidental displacement.

In summary, the Audio-Technica U891RB Cardioid Condenser Boundary Microphone with Switch, RGB LED, and Integral Power Module is a high-quality, professional-grade audio solution that offers reliability and flexibility for a wide range of sound reinforcement, broadcasting, and recording applications.

Audio-Technica U891RB Features

  • Cardioid condenser boundary microphone with touch-sensitive capacitive-type user switch
  • Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
  • The capacitive touch switch can be set to any of three operating modes: touch on/off, touch to talk and touch to mute
  • Integral, phantom-powered, two-state RGB LED indicator displays on/off status of microphone
  • 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 Degree to 360 Degree
  • 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
  • Available in two colors: black (U891Rb) and white (U891RWb)

Warranty Information

This product has a limited warranty of 24 months.

Product Documents

User Manual

Key Features

  • Capture pristine audio with this cardioid condenser boundary microphone for clear recordings.
  • Enjoy versatile use with switchable touch on/off and momentary modes for adaptable control.
  • Minimize unwanted noise using the 80 Hz roll-off feature, ensuring a cleaner sound profile.
  • Rely on the U891RB's robust build quality for consistent performance in any recording setting.
  • Achieve optimal sound with a wide 20-20,000 Hz frequency response for detailed audio capture.
  • Integrate seamlessly with phantom power; this condenser microphone enhances any setup effortlessly.

What's in the box:

  • U891RB Cardioid Condenser Boundary Microphone (Black)
  • TA3F to XLR Male Microphone Cable (25')
  • Soft Protective Pouch
  • Audio-Technica 2 Year Limited Warranty