ME33 Boundary Microphone

ME33 Boundary Microphone

ME33 Boundary Microphone

Connection of up to six units* enables high-quality recording with reduced noise even for meetings with large numbers of people.

Connecting units with 2-metre long cords enables recording in which the voice of each speaker in a large conference room is equally easy to hear.

  • In the case of an Olympus digital recorder with stereo microphone jack specifications, you can connect three units to each of the L and R channels. Up to three units can be connected to a recorder with mono microphone jack specifications. If you connect more units, the sensitivity or S/N ratio may deteriorate or the recording may fail.

Use case

  • Connection image
  • A speaker's voice can be clearly recorded even in a large area and amongst many people (such as a conference).
  • The voice of each speaker is clearly recorded.


Type Electret condenser type
Directionality Omnidirectional
Frequency response 70 to 10,000Hz
Sensitivity -35dB at 1kHz (0dB = 1V/Pa)
Output impedance 2.2kΩ
Power supply Plug-in-power system (1.5 to 5V)
Cord length 2m
Plug Ø3.5mm 3-pole mini plug (mono)
Jack Ø3.5mm 3-pole mini plug (mono)
External dimensions Ø120 x 23mm (excluding largest protrusions)
Weight Approx. 110g
Accessories Dedicated adapter (PA10)
  • Specifications are subject to change without notice.
  • Omnidirectional and non-directional are used to mean the same thing.
  • Some accessories are included with the audio recorder while others are sold separately. For details, see the corresponding audio pages.