Zaxcom ZMT4-X

2,195.00 USD

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

Unavailable for shipping outside of The United States and Canada.



Zaxcom ZMT4-X Design

The Zaxcom ZMT4-X addition to the ZMT4 family is better than ever, with its running capacity now up to 16 hours on a single charge!

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

Encrypted Audio

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.

Single or Dual MICROPHONE

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

Internal Recording

The Zaxcom ZMT4-X can simultaneously record internally to a microSD card and transmit at the same time. 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.)


RF Modulation Proprietary Digital Method
ZMT3.5-X RF Frequency Range 512 – 614 MHz
ZMT3.6-X RF Frequency Range 596 – 698 MHz
RF Frequency Step 100 KHz
RF Bandwidth in ZHD48 Mode 50 KHz
RF Bandwidth in ZHD96 Mode 100 KHz
RF Bandwidth in XR Mode 200 KHz
Channel Separation in ZHD48 Mode as close as 100 KHz
Channel Separation in ZHD96 Mode as close as 200 KHz
Channel Separation in XR Mode 400 KHz
Antenna Connector 50 Ω SSMA Female
Emission Designator 180 KV2E, 100 KV2E, 50 KV2E
FCC Part 74.861
Transmitter Audio
Dynamic Range Mono Mode 136 dB
Dynamic Range Stereo Mode 136 dB
Distortion 0.002%
Frequency Response Mode 0
High Pass Filter Off or 30 to 220 Hz, Steps
Mic Power 5 VDC
Mic Connector two microdot
Input Range -60 to -30 dBu
Mic Impedance 6.8 k Ω
ADC Bit-Depth 24 Bits
ADC Sampling-Rate 48 kHz
Timecode Reader / Generator
Clock Accuracy 1.54 PPM (1 Frame Out in 6 Hours)
Timecode Type SMPTE
Timecode Frame-Rates 23.98, 24, 25, 29.97NDF, 29.97DF, 30NDF, 30DF
Internal Recording
Media MicroSD Card (Flash Memory)
File Format .ZAX / Converts to BWAV or MP3
2.4 GHz ZaxNet Receiver
RF Frequency Range 2.403 to 2.475 GHz
RF Modulation Digital Spread Spectrum
RF Frequency Step 0.001 GHz (1 MHz)
RF Bandwidth 1 MHz
Channel Separation 2 MHz
Sensitivity -96 dBm
Weight 4.4 oz / 125 grams with Battery
Dimensions (H x W x D) 2.6″ x 1.8″ x .9″
Display Graphic OLED
Power Output 25 / 50 / 75 mW – Software Selectable
Battery Type Motorola BT100 / BT110
Battery Life Up to 16 Hours / 48 Hours of Standby