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POMPTON PLAINS, N.J. — March 3, 2021 — Zaxcom today announced the launch of the RX-4 MRX module interface to its Digital Recording Wireless line. Paired with the MRX214 or MRX414 it converts either of these two modules into a stand-alone receiver. This increases the flexibility of the MRX module by allowing it to be used on its own.

The RX-4 utilizes the power of the module-style MRX414, which is also compatible with the Nova mixer/recorder, RX-12, and RX-12R. Until now, the unit was never able to be used on its own. The RX-4 and MRX combination set a new standard for RF performance. The RX-4 has a brand-new dual-track-tuned front-end filter with a 44 MHz tuning window. There’s also an internal passive filter making it impossible to overload the RX-4, this means increased range, no intermodulation, and no interference from walkie-talkies and mobile phones. The RX-4 with MRX414 receives a 100% digital signal that is fully encrypted resulting in superior like-a-hard-wire audio quality.

The RX-4’s intelligent design includes two OLED displays to easily visually monitor data from up to 4 separate transmitters. There are four tricolor LEDs to indicate the decode status of each of the 4 receive channels and push buttons for simple navigation of menus.

The RX-4 can scan the entire frequency range, and re-freq all 4 receivers instantly to avoid localized interference at new locations. Receivers can be used anywhere in the frequency range of the RX-4 but need to be within the 44 MHz window of the tuned front-end filter. The MRX414 is one of the most power-efficient digital wireless receivers on the market – the module draws 300 mA @ 13 VDC (75 mA per receiver), paired with the RX-4 the total power draw is less than 350 mA.

The MRX414 broke new ground as the first receiver to receive audio from four separate transmitters. Now with the RX-4, the MRX414 can be used as a standalone portable receiver outside of a host unit, making the combo a great way to get started with the Zaxcom Digital Recording Wireless ecosystem. The RX-4 is an affordable and invaluable accessory, allowing for your system to expand as your needs grow.

RX-4 is available now and comes in two options, RX-4L which covers Blocks 20 – 23 (512-614 MHz), and RX-4H which covers Blocks 23 – 26 (598-698 MHz).

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Since 1986 Zaxcom, Inc. has been creating innovative audio technology for the feature film, television broadcast, live performance, and post-production industries. With a focus on high-quality audio products in multi-track recording, mixing, and digital wireless, Zaxcom is proud to be honored with technical achievements from the Academy of Motion Picture Arts and Sciences, Television Academy, and Cinema Audio Society. Zaxcom operates its production facilities in Pompton Plains, NJ, and continues to set the standard for sound professionals worldwide. For more information, visit