• Gift Certificate
  • Track Order
  • Help
  • Feedback [+]
  • Ship To: US Flag
  • Shop by Department
  • Hot Deals

MF MD HG July Financing 7-22-14

Audio-Technica U891R Boundary Microphone with Switch  

  • Write a Review
Product #270503

We're sorry—this item is unavailable.

Find a similar product below or contact our experts for a recommendation of great alternatives. Call us at 800-449-9128.

Similar Items:
  • See All Audio-Technica Condenser Microphones

    Designed to deliver easy, flexible control in conference and boardroom installations.

    The Audio-Technica phantom-powered U891R Boundary Microphone features a touch-sensitive on/off switch that can be set to three modes: press-on/press-off, press to talk, and press to mute. The phantom-powered microphone is equipped with a unique PivotPoint rotating output connector and an LED status indicator. UniGuard innovations offer unsurpassed immunity from radio frequency interference; interchangeable elements are available in cardioid, hypercardioid, and omnidirectional polar patterns; an 80Hz low-cut UniSteep filter reduces pickup of low-frequency ambient noise. The microphone's heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone. The unit's self-contained electronics eliminate the need for an external power module.


    • Designed for surface-mount applications
    • such as high-quality sound reinforcement, professional recording, television, conferencing, and other demanding sound pickup situations
    • Ultra-quiet electronic switch can be set to any of three operating modes: "touch-on/ touch-off," "touch-to-talk," and "touch-to-mute"
    • PivotPoint rotating output connector allows cable to exit from either the rear or the bottom of the microphone
    • Superior off-axis rejection for maximum
    • gain before feedback
    • UniGuard RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
    • Small-diameter UniPoint capsule near boundary eliminates phase distortion and delivers clear, high-output performance
    • Heavy die-cast case and non-slip silicon foam bottom pads minimize coupling of surface vibration to the microphone
    • Low-profile design with low-reflectance finish for minimum visibility

    Order today.


    U891R Boundary Microphone with Switch Specifications:

    • ELEMENT: Fixed-charge back plate, permanently polarized condenser
    • POLAR PATTERN: Half-cardioid (cardioid in hemisphere above mounting surface)
    • FREQUENCY RESPONSE: 30-20,000Hz
    • 18dB/octave
    • OPEN CIRCUIT SENSITIVITY: —34dB (19.9 mV) re 1V at 1 Pa
    • IMPEDANCE: 200 ohms
    • MAXIMUM INPUT SOUND LEVEL: 130dB SPL, 1kHz at 1% T.H.D.
    • DYNAMIC RANGE (TYPICAL): 104dB, 1kHz at Max SPL
    • SIGNAL-TO-NOISE RATIO: 68dB, 1kHz at 1 Pa
    • PHANTOM POWER REQUIREMENTS: 11-52V DC, 4 mA typical
    • SWITCHES: Touch-sensitive control: on/off; Switch function: touch on/off, momentary on, momentary off; Flat, roll-off
    • WEIGHT: 9.3 oz (264 g)
    • DIMENSIONS: 4-1/4" (108.0mm) long, 3.31" (84.0mm) maximum width, 0.91" (23.0mm) height
    • CABLE: 25' (7.6m) long, 0.13" (3.2mm) diameter, 2-conductor, shielded cable withTA3F and XLRM-type connectors
    • OPTIONAL INTERCHANGEABLE ELEMENTS: UE-H hypercardioid (100 degrees); UE-O omnidirectional (360 degrees)
    • ACCESSORY FURNISHED: Soft protective pouch
    Customer Reviews
    You are changing the Ship-To country.

    Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.