Cut the cables and experience true freedom with the U4 In-Ear Monitor Wireless System. Designed for musicians, performers and audio professionals, this ultra-compact system delivers high-resolution sound, ultra-low latency and a reliable wireless connection, making it perfect for live performance, studio work and home practice.

Using industry-standard 2.4 GHz wireless technology, the U4 provides a stable connection with impressive range and clarity, allowing you to move freely while staying fully connected to your mix.

Main Features

• Ultra-compact wireless in-ear monitoring system
• High-quality 24-bit / 48 kHz audio performance
• Ultra-low latency of less than 5 ms
• Reliable 2.4 GHz wireless technology
• Operating range up to 90 ft line of sight
• Wide frequency response from 20 Hz to 20 kHz
• 6 switchable channels with up to 6 simultaneous systems
• Includes transmitter and belt-pack receiver
• Compatible with in-ear monitors, headphones and earbuds
• Rechargeable battery with up to 5 hours operation
• Can be used while charging

Complete Wireless Monitoring System

The U4 system consists of a compact transmitter and a lightweight belt-pack receiver. The transmitter connects directly to your mixer or audio interface, while the receiver delivers your monitor mix straight to your headphones or in-ear monitors.

This simple yet powerful setup provides a clean, cable-free monitoring solution that is ideal for performers who need flexibility without sacrificing sound quality.

Clear and Detailed Sound

Enjoy professional-grade audio with 24-bit / 48 kHz resolution, delivering exceptional clarity and detail across the full frequency spectrum. With a frequency response of 20 Hz to 20 kHz and a signal-to-noise ratio of 107 dB, the U4 ensures your mix is heard exactly as intended.

The ultra-low latency of just 5 ms keeps everything perfectly in time, making it suitable for demanding live performance environments.

Versatile Applications

The U4 system is designed to adapt to a wide range of scenarios:

• Wireless monitoring for live performance
• Studio recording with freedom of movement
• Silent practice using headphones or in-ear monitors
• Group communication for presentations or tours
• Band rehearsals without the need for PA speakers

With support for multiple receivers, you can broadcast to several users at once, making it ideal for bands, teams and group demonstrations.

Rechargeable and Ready to Go

Both the transmitter and receiver feature built-in rechargeable lithium-ion batteries, providing up to 5 hours of continuous use. Charging is quick and convenient via USB, taking approximately 2.5 hours for a full charge. The system can also operate while charging, ensuring uninterrupted performance when needed.

Specifications

• Wireless Type: 2.4 GHz ISM worldwide open band
• Bit Depth / Sample Rate: 24-bit / 48 kHz
• Channels: 6 switchable channels. Up to 6 simultaneous systems
• Frequency Response: 20 Hz to 20 kHz
• Dynamic Range: 107 dB
• Signal-to-Noise Ratio: 107 dB
• Total Harmonic Distortion: 0.2%
• Latency: 5 ms
• Operating Range: 27.5 m / 90 ft line of sight

Transmitter

• Model: U4T
• Connector: XLR or mono unbalanced ¼ inch TS with supplied adapter
• Dimensions: 100 x 30 x 28 mm
• Weight: 90 g

Receiver

• Model: U4R
• Headphone Output: 3.5 mm
• Dimensions: 60 x 47 x 41 mm
• Weight: 118 g

Battery

• Type: Internal rechargeable lithium-ion
• Battery Life: Up to 5 hours
• Charging Time: Approximately 2.5 hours
• Charging Voltage: 5V USB
• Usable While Charging: Yes

Outside the UK?

Please note that shipping costs outside the UK are very approximate and can vary radically. Please contact us with your Country and Post/Zip Code for an accurate quote. Many thanks. Please also note if you are outside the UK we will not charge you tax on your purchase but you may be liable for import duty in your country.

Please also note that all our stock is sold for the UK market. If you are buying from outside the UK, please check that it is suitable for use in your country before purchase.