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Audio-Technica U891Rb: Cardioid Condenser Boundary Microphone

Model U891Rb

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  • Authorized Audio Technica Reseller
  • Manufacturer Warranty
  • Pan-India Delivery
  • Expert Project Support
  • Designed for surface-mount applications such as high-quality sound reinforcement, professional recording
  • The capacitive touch switch can be set to any of three operating modes: touch on/off, touch to talk
  • Integral, phantom-powered, two-state RGB LED indicator displays on/off status of microphone
  • Superior off-axis rejection for maximum gain before feedback
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Product Overview

Overview

The Audio-Technica U891Rb is a cardioid condenser boundary microphone. Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891Rb condenser boundary microphone features a touch-sensitive capacitive-type user switch that can be set to three modes: touch on/off, touch to talk, and touch to mute. The phantom-powered microphone is equipped with a unique PivotPoint rotating output connector and a two-state RGB LED status indicator.

Corporate AV supplies, installs and supports the Audio-Technica U891Rb across India. Request a quote for supply, installation and commissioning.

Key features

  • Designed for surface-mount applications such as high-quality sound reinforcement, professional recording
  • The capacitive touch switch can be set to any of three operating modes: touch on/off, touch to talk
  • 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
  • Available interchangeable elements permit angle of acceptance from 100° to 360°
  • UniGuard RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
Why choose the U891Rb
It is a cardioid condenser boundary microphone, a boundary microphone built for tables, lecterns and surfaces in meeting rooms. Corporate AV adds a site survey, installation and support across India, so the U891Rb is specified and set up for your space and not just shipped.
Product Highlights

Key Benefits

Designed for surface-mount applications such as high-quality sound reinforcement, professional recording

The capacitive touch switch can be set to any of three operating modes: touch on/off, touch to talk

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

Use Cases

Ideal Applications

Conference tables and boardrooms

Lecterns and podiums

Courtrooms and council chambers

Houses of worship

Technical Details

Technical Specifications

Audio
Element Fixed-charge back plate, permanently polarized condenser
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
Dynamic Range 104 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio 68 dB, 1 kHz at 1 Pa, A-weighted
Switches Activation: on/off Switch function: touch on/off, momentary on, momentary off LED Color: mic on, mic off Flat, roll-off
Optional Interchangeable Elements UE-C Cardioid (120°); UE-H hypercardioid (100°); UE-O omnidirectional (360°)
Connectivity
Maximum Input Sound Level 130 dB SPL, 1 kHz at 1% T.H.D.
Physical and power
Phantom Power Requirements 11-52V DC, 9.3 mA
Weight 253 g (8.9 oz)
Cable 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
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
Accessories Included Soft protective pouch
Other specifications
Category Boundary Microphone, Audio-Technica
In The Box

What's Included

Soft protective pouch

Related Solutions

Why CorporateAV?

Sourced right. Installed right.

Genuine Manufacturer Stock
Every unit sourced through authorized distribution, backed by manufacturer warranty.
Expert AV Integration
Paired correctly with compatible systems and your room's existing AV infrastructure.
Pan-India Delivery & Support
On-site installation and ongoing technical support wherever your project is based.
More Details

Additional Information

Why Buy The U891Rb From Corporate AV?
  • Genuine Audio Technica stock with manufacturer warranty support
  • Custom pricing for bulk and multi-room / multi-site rollouts
  • Local after-sales support — a real team you can call or WhatsApp, not a call centre
  • Expert guidance on product selection and deployment planning
  • Professional installation across Bangalore, Hyderabad, Mumbai, Delhi NCR, and the wider India region
Contact us: +91 99452 30186, WhatsApp us or email avsupport@corporateav.in.
Distribution

Corporate AV supplies and installs Audio Technica products across Bangalore, Hyderabad, Mumbai, Delhi NCR, Chennai, Pune, Kolkata, Ahmedabad, and the wider India region.

Frequently Asked Questions

What is the Audio-Technica U891Rb?
The Audio-Technica U891Rb is a cardioid condenser boundary microphone. Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891Rb condenser boundary microphone features a touch-sensitive capacitive-type user switch that can be set to three modes: touch on/off, touch to talk, and touch to mute. The phantom-powered microphone is equipped with a unique PivotPoint rotating output connector and a two-state RGB LED status indicator.
Who is the Audio-Technica U891Rb best suited for?
The U891Rb suits conference tables and boardrooms, lecterns and podiums and courtrooms and council chambers. Corporate AV can advise whether it is the right fit for your space.
Can Corporate AV supply multiple Audio-Technica U891Rb units for a rollout?
Yes. Corporate AV supplies and integrates the Audio-Technica U891Rb in single units and multi-room rollouts across India, with a site survey, installation, commissioning and support.
How do I get a quote for the Audio-Technica U891Rb in India?
Use the Request a Quote button on this page or contact Corporate AV with your room details and quantity, and a consultant will respond with a quotation for supply and installation.
What accessories are included with the Audio-Technica U891Rb?
Audio-Technica lists these included accessories: Soft protective pouch.
What power does the Audio-Technica U891Rb need?
Audio-Technica specifies 11-52V DC, 9.3 mA for the U891Rb.
What are the key specifications of the Audio-Technica U891Rb?
Audio-Technica lists these key specifications for the U891Rb. Element: Fixed-charge back plate, permanently polarized condenser. 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.