The ZMT4-X is the latest addition to the ZMT4 family, it runs up to 16 hours on a single charge!

It’s our longest-running and most durable transmitter, it’s made from tough nylon polymer and rubber materials to maximize performance out in the field.


Audio is transmitted using 100% digital modulation. Transmitting digitally allows the audio to be encrypted. Zaxcom uses an advanced encryption system to keep audio private.


Supports two lavalier microphones in stereo mode or a single lavalier in mono mode. Connection type: two microdot inputs.


Transmitted audio can be simultaneously recorded internally to a microSD card. Audio files are recorded using the highly reliable lossless MARF (Mobile Audio Recording Format) which eliminates file corruption common to recordings due to a dead battery or early card removal.


The ZMT4-X provides a 136 dB dynamic range in both mono or stereo modes. Power is selectable, either 25 or 50 mW. An OLED displays key information.


ZaxNet™ is a long-range remote control system allowing users to change frequency, input gain, and power output without removing the transmitter from the talent.

Zaxcom High Density modulation (ZHD) increases the number of available channels to 9 in one MHz of spectrum space.


A Motorola BT100/BT110 (PMNN4468A) battery provides up to 16 hours of runtime and 48 hours of standby time on a single charge.


ZMT4-X is available in the following frequency bands:

“.5 band” (512-608 MHz)

“.6 band” (596-698 MHz) (not available in the U.S.)


  • Transmitter
    • RF ModulationProprietary Digital Method
    • ZMT3.5-X RF Frequency Range512 – 614 MHz
    • ZMT3.6-X RF Frequency Range596 – 698 MHz
    • RF Frequency Step100 KHz
    • RF Bandwidth in ZHD48 Mode50 KHz
    • RF Bandwidth in ZHD96 Mode100 KHz
    • RF Bandwidth in XR Mode200 KHz
    • Channel Separation in ZHD48 Modeas close as 100 KHz
    • Channel Separation in ZHD96 Modeas close as 200 KHz
    • Channel Separation in XR Mode400 KHz
    • Antenna Connector50 Ω SSMA Female
    • Emission Designator180 KV2E, 100 KV2E, 50 KV2E
    • FCC Part74.861
  • Transmitter Audio
    • Dynamic Range Mono Mode136 dB
    • Dynamic Range Stereo Mode136 dB
    • Distortion0.002%
    • Frequency ResponseMode 0
    • High Pass FilterOff or 30 to 220 Hz, Steps
    • Mic Power5 VDC
    • Mic Connectortwo microdot
    • Input Range-60 to -30 dBu
    • Mic Impedance6.8 k Ω
    • ADC Bit-Depth24 Bits
    • ADC Sampling-Rate48 kHz
  • Timecode Reader / Generator
    • Clock Accuracy1.54 PPM (1 Frame Out in 6 Hours)
    • Timecode TypeSMPTE
    • Timecode Frame-Rates23.98, 24, 25, 29.97NDF, 29.97DF, 30NDF, 30DF
  • Internal Recording
    • MediaMicroSD Card (Flash Memory)
    • File Format.ZAX / Converts to BWAV or MP3
  • 2.4 GHz ZaxNet Receiver
    • RF Frequency Range2.403 to 2.475 GHz
    • RF ModulationDigital Spread Spectrum
    • RF Frequency Step0.001 GHz (1 MHz)
    • RF Bandwidth1 MHz
    • Channel Separation2 MHz
    • Sensitivity-96 dBm
  • Physical
    • Weight4.4 oz / 125 grams with Battery
    • Dimensions (H x W x D)2.6” x 1.8” x .9”
    • DisplayGraphic OLED
  • Power
    • Power Output25 / 50 / 75 mW – Software Selectable
    • Battery TypeMotorola BT100 / BT110
    • Battery LifeUp to 16 Hours / 48 Hours of Standby

Zaxcom - ZMT4-X

  • Brand: Zaxcom
  • Product Code: ZMT4-X
  • Availability: In Stock
  • $2,095.00

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