X-vive X-VIVE U4R2

Essential Information About the Xvive U4 Wireless In-Ear Monitor System (Transmitter + 2 Receivers)

• Wireless in-ear monitoring for 2 musicians: 1 U4T transmitter + 2 U4R receivers, ideal for sharing the same monitor mix.


• High-resolution sound and very low latency: 24-bit / 48 kHz audio with latency under 5 ms for natural playing.


• Plug-and-play simplicity: 6 selectable channels in 2.4 GHz, quick setup on stage, in rehearsal, or in the studio.


• Compact and self-contained design: built-in rechargeable batteries (up to 5 hours), 5V USB charging, and usable during charging.

A U4 system designed to make in-ear monitoring simpler, lighter, and more mobile

The Xvive U4 was designed to meet a very practical need: switching to in-ear monitoring without adding bulk with racks, antennas, and complex settings. Its ultra-compact format and "plug in, select a channel, play" approach make it a particularly convenient solution for traveling bands, shared stages, music schools, or gigs where setup time is limited. Within the U4 range, this pack with two receivers is the ideal balance for a duo (or two band members) wanting to receive the same monitoring mix.

Who is it for and what are the use cases?

This set is aimed at musicians and technicians who want reliable and quick in-ear monitoring: drummers, singers, guitarists, keyboardists, stage musicians in general, as well as content creators and home studio setups looking to free themselves from cables. The transmitter typically connects to a console output (monitor mix), then broadcasts the signal to the two belt-pack receivers, where you plug in your in-ear monitors or headphones. Since the system is mono, it is perfectly suited for a simple, clear, and effective monitor mix.

Key features: stability, clarity, and control at your fingertips

24-bit / 48 kHz audio: precise monitoring, usable in stage conditions

The U4 transmits a 24-bit / 48 kHz digital signal, with a frequency response rated from 20 Hz to 20 kHz and a signal-to-noise ratio of 107 dB. The result: detailed monitoring with good clarity of attacks and nuances, useful for tuning accuracy, dynamics, and rhythmic placement, even at moderate volume.

Latency under 5 ms: a natural playing feel

Latency is critical in in-ear monitoring. Here, it stays under 5 ms, allowing for a direct feel, especially important for drummers, singers, and all musicians sensitive to the delay between action and sound.

2.4 GHz and 6 channels: convenient on shared stages

The U4 operates in the 2.4 GHz band with 6 selectable channels. This facilitates adaptation on stages where multiple wireless systems coexist. Usage is simple: choose a channel on the transmitter, set both receivers to the same channel, then adjust each musician's volume individually.

AUX / LINE modes: suitable for consumer sources and consoles

Depending on your source, you can select an AUX input mode (convenient for lower levels from consumer devices) or LINE mode (for consoles, interfaces, and professional audio gear). This is a real advantage for switching between setups without fiddling with levels.

Battery life and USB charging: ready for rehearsals and gigs

The transmitter and receivers include rechargeable batteries, rated for 5 hours of autonomy. Charging is via 5V USB, and the system can remain operational during charging, which is handy between soundchecks, rehearsals, or recordings.

Technical Specifications

Configuration

• Type: wireless in-ear monitoring system


• Pack composition: 1 U4T transmitter + 2 U4R receivers


• Audio transmission: mono


• Channels: 6

Audio Quality

• Audio resolution: 24-bit / 48 kHz


• Frequency response: 20 Hz to 20 kHz (-3 dB)


• Signal-to-noise ratio: 107 dB


• Total harmonic distortion: 0.2%


• Latency: under 5 ms

Wireless (RF)

• Frequency band: 2400 to 2483.5 MHz


• Operating range: up to 27.5 m (line of sight, open field)


• RF sensitivity: -88 dBm


• RF power: max 10 mW E.I.R.P.

Connectivity and Levels

• Transmitter input: XLR


• Input compatibility: balanced XLR, or 6.35 mm TS mono unbalanced jack via included adapter


• Receiver output (headphones/in-ear): 3.5 mm mini-jack


• Input impedance: 47 kilohms


• Input levels: AUX mode -10 dBV (max +12.2 dBu); LINE mode +4 dBu (max +22 dBu)


• Output impedance: 6 to 600 ohms

Power Supply

• Battery type: rechargeable lithium-ion (internal)


• Battery life: up to 5 hours


• Charging time: 2.5 hours (full charge)


• Charging voltage: 5V (USB)


• Usable during charging: yes


• Battery capacity: transmitter 860 mAh; receiver 1200 mAh

Dimensions and Weight

• Transmitter: 100 x 30 x 28 mm; 90 g


• Receiver: 60 x 47 x 41 mm; 118 g

Contents

• 1 U4T transmitter


• 2 U4R receivers


• 6.35 mm Jack to XLR adapter


• USB cable


• Carrying bag