MCB4

Antenna Combiner

MSRP* US$799.00
Two-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.



  • Overview
  • Features
  • Downloads
  • Reviews
  • Q & A

  • Overview

    Audio-Technica MCB4 Antenna Combiner allows the signals of up to four M3 Wireless In-Ear Monitor stereo transmitters to be combined onto a single transmitting antenna, reducing rack clutter.

    A wide-band unit that operates over the 440-865 MHz range, the MCB4 is designed to complement Audio-Technica M3 Wireless In-Ear Monitor Systems. It is also suitable for many other in-ear wireless systems (with external BNC antenna connections) operating within the 440 to 865 MHz range. The MCB4 provides one output and four isolated transmitter inputs. All RF connectors are BNC-type.

    Four jacks on the rear panel (controlled by the unit's power switch) provide 12V DC (center positive) to power as many as four transmitters operating on 12 volts at up to 600 mA each. Included with the unit are four DC cables appropriate for use with M3T (or like-powered) transmitters. The 12-volt supplies for powering transmitters are short-circuit protected. The unit features all-metal construction for extreme durability and protection from radio frequency interference.


  • Features


    • Broadband UHF operation (440-865 MHz range)

    • Combines the signals of up to four wireless in-ear monitor transmitters into one antenna

    • Centralized power supply with ability to power four individual transmitters

    • Maintains clean signals with low distortion

    • Includes hardware for front-mounting the antenna for improved performance

    • Includes adapters to allow the unit to be mounted into a single rack space


  • Downloads

    MCB4 Manual (pdf 718.05 KB)
    MCB4 Submittal Sheet (pdf 218.42 KB)
  • Reviews

  • Q & A

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    4 Questions | 4 Answers
    Displaying questions 1-4
    • Q:

      Will the MCB4 work with the M2 in ear products
      Asked on 2/16/2015 by Ziggy

      1 answer

      • A:

        Yes. You may use the MCB4 to combine the transmit signal from four M2 or M3 IEM transmitters and send via a single antenna.

        Answered on 2/18/2015 by AudioSolutionsSpec3
    • Q:

      Can I use this combiner in a two-tier system?

      I'm wondering if I can combine 16 IEM transmitters into a single antenna using five MCB4 combiners in a two-tier system; the antenna outputs of the first four combiners would plug into the antenna inputs of the fifth MCB4, which then plugs into the antenna.
      Asked on 4/1/2012 by ckthesoundtech

      1 answer

      • A:

        Thank you for your inquiry. No, these can not be daisy chained. Only 4 systems per unit with it's own antenna and be used.

        Answered on 4/5/2012 by AudioSolutionsManager from Stow, OH
    • Q:

      Yeah OK... so is this how you sell this product... " depends on conditions" Line of sight is Ok ... so 10' ... 2 miles .. what?
      Asked on 12/7/2011 by Harvgood

      1 answer

      • A:

        Tthe transmit distance is 100 m (300'), typical
        (Open range environment with no interfering signals.)

        Answered on 12/7/2011 by AudioSolutionsManager from Stow, OH
    • Q:

      What is the maximum effective distance this system works?

      seems like a better broad range antenna distro... than your band limited distros.
      Asked on 12/5/2011 by Harvgood

      1 answer

      • A:

        Thank you for your inquiry. This device is designed for use with our M3 transmitter and is for transmit only. The effective distance is dependant upon many things; transmit power, line of sight, environmental conditions and so on. The advantage of using this device is to allow 4 M3 transmitters to share a single antenna that can be remote mounted closer to the receivers or above obstructions.

        Answered on 12/7/2011 by AudioSolutionsManager from Stow, OH
    Displaying questions 1-4

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