The MX3-4, our four-input wireless assistive listening system, is an excellent option for restaurants, sports bars, and additional spaces where multiple audio sources are needed. Thanks to seamless integration with each user’s smartphone or mobile device, the costs associated with installing and operating a streaming audio system are much lower, and the listening experience is ideal for everyone. Additionally, the MX3-4 uses a minimal amount of bandwidth from your existing wireless internet service, meaning there is virtually no effect on speed or signal strength. The Audio Everywhere from Listen Technologies cloud server interface makes updates and other service options simple and fast.

*Custom solutions available upon request to accommodate more channels/users, email [email protected] for information.


One (1) MX3-4 Audio Everywhere 4 Channel Wi-Fi Server


•Plug & Play Installation
•Ultra-Low Latency
•Uses Existing Wireless Network

Product Specifications
Specification MX3-4


Audio Inputs Rear panel, four (4) Female 3.5mm TRS, -14 dBu (line) nominal input level, -2 dBu maximum input level, impedance 10k ohm
Ethernet RJ45: 100 BaseT or 1000 BaseT (gigabit)
Analog 3.5mm

Power Supply

Connector DC Barrel Connector
Input Voltage 100-240 VAC, 50-60Hz
Output Voltage 5 VDC
Current 1.2 A
Power 6W
Countries North American, UK, EU, AUS


IP Address DHCP, Static, Reserved
Prioritization QoS/ToS
C Users 150 (per server)
Max Channels 4 mono
WAP Support 802.11n or better w/WMM enabled
Supported WAP Frequencies 2.4 GHz & 5 GHz
Bandwidth Use Approx. 140 kbps per user
App Support iOS/Android
Cloud Service Yes
Regulatory FCC, CE, RoHS
Warranty 2 years

Multiple servers may be used to increase the number of channels.


Dimensions (H x W x D) 45mm x 483mm x 155mm (1.77in x 19.02in x 6.1in)
Weight 2.2 kg (4.85 lbs)
Rack Space 1RU

Audio Everywhere from Listen servers are cloud managed with customizable in-app functions which support welcome messages, videos, sliding banners, pdf documents, offers and supports portable smart iOS and Android devices.
Q What do I do if the receivers are located far from the Server?
A There are several solutions possible. One is to use multiple Servers. Then instead of running long audio wires, you would run on Ethernet wire. The Servers would be combined in an Ethernet switch. This may be easier. Another option is to use RF modulators to send the signal from one end of the establishment to the other. Finally, the easiest solution may just be to run long audio wire. The audio signals are relatively low frequency and line level. If the runs are over about 8 meters then you might use baluns on one end or two to switch from single-ended to differential signals. The use of baluns with our differential input devices is discussed here.
Q Are there any special considerations when distributing video through modulators or using a matrix switch?
A Video modulators and matrix switches add a fixed delay to the video. Because of this, the audio can come out before the video, resulting in poor lip sync. The solution is to adjust the delay using our Cloud Server as discussed here.
Q I cannot log on to the venue’s Wi-Fi, what do I do?
  • The Wi-Fi may have a password which you need to get from the venue.
  • Or the venue’s connection to the Internet may be broken.  Please ask them to check or reboot their system. (For you techies, if your iPhone cannot get an IP address from a DHCP server, it won’t let you on the Wi-Fi.)
Q I am on the Wi-Fi, but cannot see the channels/TVs/audio sources
  • First, check that you are on the correct Wi-Fi.
  • Touch refresh on the App.
  • The system may be off for some reason.  Please ask the venue operator to turn on the Server or perhaps reboot it.
Q The audio feed I want doesn’t seem to have a corresponding channel
A Channel availability depends on the venue’s configuration.  Try scanning through all the sources or consult the venue-specific channel listings to see if the audio feed you want is available.
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