Half‑cardioid pattern boundary layer microphone

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  • Boundary layer
  • Half-cardioid polar pattern
  • Ultra-thin profile (16 mm) housing 
  • Rubber non-slip bottom pad and strong steel screen
  • Integrated pop filter

A boundary microphone with “half-cardioid” pick-up pattern and built-in equalization, the RE90B is ideal for video and teleconferencing systems, boardrooms, classrooms, or houses-of-worship. Delivers every word fully and naturally. Also available in white (RE90BW).


Connector Type 3-pin XLR
Height 16mm (0.63")
Width 94mm (3.7")

Depth 123mm (4.84")
Frequency Response (-3 dB) 80 - 15,000 Hz
Weight Net 12.63oz (358g)
Family RE Series Installation
Case Material Die cast zinc
Finish Non-reflective black or white
Power Requirement 9 - 52 VDC
Polar Pattern Cardioid
Wired/Wireless Wired
Mic Type Boundary
Element Condenser (back-electret)
Impedance, Low-Z balanced 200Ω
Open Circuit Voltage 25mV/Pascal


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