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. No lavaliere mic included? That's unexpected.

A: Since the transmitters have built-in microphones, the SmallRig Forevala W60 2-Person Compact Wireless Microphone System does not include separate external microphones and the manufacturer makes it an option for the user, Similar wireless mic systems like the Rode Wireless GO II and DJI Mic Wireless Microphone Systems do not include separate external microphones either. Since the transmitters for these systems feature built-in microphones and many users only want to use the built-in mics, the manufacturers make it an option for the user to decide so if they prefer using an external mic, they can purchase the compatible microphones that they would like to use. This way, if the user prefers a headset or earset style mic instead of a lavalier, they can get the type of mic and the model for the mic that they like best.

Q: 2. does this have a base station or does it go thru the master headset?

A: The Eartec EVADE XTreme EVXT4 Industrial Full-Duplex Wireless Intercom System with 4 Dual-Ear Headsets includes one wireless master headset and three wireless remote headsets.

Q: 3. Can U3C provide phantom power to Rode RTG3 microphone?

A: Yes, the Xvive Audio U3C Set Wireless Plug-On System for Condenser Microphones (2.4 GHz) can provide phantom power to the NTG3.

Q: 4. 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: 5. 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: 6. Can one transmitter be used to two receivers?

A: Yes, the audio from one Xvive Audio U3T 2.4 GHz Digital Wireless Transmitter can be sent to two receivers.

Q: 7. What is the range in feet that this will work?

A: According to the manufacturer's specifications, the Hollyland LARK M1 SOLO Wireless Microphone System has a transmission distance of up to 656 feet (line of sight).

Q: 8. Is this mono or stereo?

A: The input is a mono XLR connection. The output would be dual mono from the stereo output jack.

Q: 9. Does it works with a laptop?

A: You can use the 3.5mm TRS to TRRS cable that is included with the Hollyland LARK M1 SOLO Wireless Microphone System to connect to the 3.5mm jack on a laptop that accepts a microphone. The TRRS connector will go to the laptop.

Q: 10. What charger should I use to charge the handwheel? Is it possible to damage the equipment if using a higher volt charger like those using for fast charging on phones?

A: The product linked below will be able to charge the handwheel: https://www.bhphotovideo.com/c/product/1448096-REG/iessentials_ie_4pk_micro_4_piece_micro_kit.html