The U4R Wireless In-Ear Monitor System from Xvive Audio provides performers and presenters a hands-free, cost-effective, and expandable solution that supplies 24-bit/48 kbps digital sound quality to their favorite in-ear and headphone monitors. This configuration includes a single receiver and a single transmitter; ready for plug-and-play use in a wide variety of settings including musical venues and and theatres, houses of worship, schools, corporate conference rooms, and more.

The portable, easy-to-use U4 system features road-worthy components housed in tough molded-plastic and cast-metal chassis built to handle the rigors of touring and designed to work with a huge variety of audio gear. The components are powered by internal non-replaceable batteries that offer 5 hours of operating time and are recharged via USB ports.

The transmitter works with basically any mixer or other device that has an available balanced XLR or unbalanced 1/4" output jack. Just plug the transmitter in, and it will broadcast the incoming audio to any of its six selectable 2.4 GHz channels. Simply set the bodypack receivers to the same channel and you're good to go. The system provides a 90' line-of-sight transmission range and a 5 ms latency, low enough for musical applications.

Wireless In-Ear Monitoring System    Includes T9 In-Ear Monitors    2.4 GHz Band Works Anywhere in the World    Transmitter Plugs into XLR or 1/4" Gear    5 Hours on Built-In Rechargeable Battery    24-Bit/48 kb/s, 5 ms Latency    Two Balanced-Armature Drivers    Powerful Mid-Bass Driver + Tweeter    Custom Unified Crossover    3.9' Cable with 3.5mm Connector

• Simple to use: plug in the tranmitter and set the transmitter and receiver to the same channel—that's it
• The 2.4 GHz system works anywhere in the world—ready to go where the tour goes
• The U4 receiver can work with multiple transmitters, you can add more as you need them
• The system offers 6 wireless channels to choose from, allowing you to expand the system with additional transmitters (available separately) and send different monitor mixes, specifically tailored to the needs of your performers

• The U4 offers 24-bit / 48 kb/s digital audio with a 107 dB dynamic range and a 20 Hz to 20 kHz frequency range
• Transmission range is 90' line of sight and the latency is 5 ms
• A built-in rechargeable battery powers each component for 5 hours 
• Belt clip and volume control on receivers
• Works with a wide range of in-ear and headphone monitors

• LINE MODE: Use with mixers or other professional audio devices that send line-level signals.
• AUX MODE: Use when connecting consumer audio devices such as portable audio players or computers

Related Questions and Answers

Q: 1. will one transmitter work two receivers ?

A: Yes, you can send audio from one transmitter to two receivers.

Q: 2. The description is confusing. It says this can work with a battery powered condenser microphone however this furnishes 48v phantom power. Will a battery powered mic plugged into this transmitter cause damage the same way a battery powered mic would cause damage with a +48v phantom powered camera system like a GH5? Will a battery powered mic extend the usage time beyond 5 hours?

A: The UT3 transmitter does NOT supply +48V phantom power. It can be used with battery-powered condenser mics and dynamic mics which do not require any power source. When using a camera that can supply phantom power for a microphone, there is typically a switch that allows you to select whether phantom power is on or off to allow use of microphones that do not require phantom power.

Q: 3. Can the transmitter be plugged into a soundboard's XLR main output and can the receiver be plugged into the XLR input of the Canon XA11 Camcorder (B&H # CAXA11 MFR # 2218C002)? If so, should the XA11's input be set to Line, MIC, or MIC +48?

A: You can not plug the xlr transmitter directly into a mixer. However, you can plug an xlr attenuator like this B&H # PEIMA1030 into the mixer via an xlr cable, then the Xvive transmitter to that. This will change the line level out of the mixer to a mic level that the transmitter can handle. The receiver would plug into the camera, and the camera would be set to mic level.

Q: 4. Can U3C be used even with a dynamic microphone that doesn't need phantom power with phantom power switched off?

A: The Xvive Audio U3C Set Wireless Plug-On System for Condenser Microphones is only meant for condenser microphones, and the manufacturer specifically advises against connecting dynamic microphones to this system. It does not appear that phantom power can be switched off on this version and therefore has the potential to damage dynamic microphones.

Q: 5. Does the receiver output line level? I have a press box that is line in to 6 mic level out that I'm trying to make wireless.

A: The Xvive Audio U3 2.4 GHz Digital Wireless Microphone System can be used with either a mic or line level signal.

Q: 6. Can you run a pair of these for a stereo mic (2 Tx, 2 Rx)? Interference issues?

A: Yes you could run a stereo pair without interference.

Q: 7. How can you record all 4 channels independently using a recorder like the Sound Devices Mix Pre 6?

A: The Comica Audio Vimo Q Mini 4-Person Wireless Microphone System provides a combined output signal with the audio from all 4 mics, so it is not possible to record each mic independently.

Q: 8. Can you charge the transmitter/receiver while it is in operation?

A: Thank you for your question. You are unable to charge the receiver or transmitter while it is in use. They do last an average of 5 hours on a full charge to get through most performance situations.

Q: 9. It seems the receiver is rechargable. I'm plugging it into a board with global phantom power. Will this damage the receiver or affect the sound negatively?

A: That should not present a problem or degrade your sound.

Q: 10. Can this be used with DSLR/Mirrorless cameras? I am aware that one would need to attach an XLR to 3.5mm jack to the receiver. Is the output of the receiver mic level? The minute size would make it ideal for run & gun type of filming.

A: Yes, It can be used on with DSLR/Mirrorlesscamera but please realized that for the Receiver of U3 is the balanced XLR output and so there would be hiss sound/high white nosie if you just simply use a cable convert the XLR output to 3.5mm Jack. it would be address this issue if you apply IRIG PRE or similar prodct. As to the output,Yes, the receiver output is Mic level.