LD Systems U508 IEM In-Ear Monitoring System - 863–865 MHz + 823–832 MHz

LD Systems U508 IEM In-Ear Monitoring System - 863 - 865 MHz + 823 - 832 MHz

Professional mobile monitoring on two license-free frequency bands: The LD Systems U508 IEM

With the LD Systems U508 IEM In-Ear Monitoring System - 863 - 865 MHz + 823 - 832 MHz, top-tier wireless stage monitoring becomes a reality. This system offers musicians and sound engineers not only crystal-clear sound delivered directly to the ear, but also complete freedom of movement and flexibility when used on a wide variety of stages. The combination of two license-free frequency bands makes the U508 IEM the ideal solution for use throughout Europe—without the need for frequency coordination or additional permits.

Thanks to state-of-the-art technology, 96 selectable transmit channels, and powerful RF output of up to 30 mW, the system meets the highest standards for sound quality, range, and immunity to interference. The focus is on professional applications in live performance and touring. Whether you’re a solo artist, band member, or stage technician: With the U508 IEM, you’ll always have your mix under control—precisely, reliably, and fully customizable.

LD Systems – High-Quality Audio Technology from Germany

The LD Systems brand stands for professional audio solutions used worldwide at live concerts, festivals, theaters, and events. With the U500® series, LD Systems once again demonstrates its expertise in developing high-performance wireless technology with intuitive operation. Every product is designed, tested, and perfected in Germany—with the goal of offering users on stage maximum control and first-class sound quality.

The LD Systems U508 IEM is part of this high-quality series and impresses with its functionality, reliability, and elegant design. The well-thought-out user interface, featuring a high-contrast OLED display, infrared synchronization, and savable presets, makes operation particularly convenient—a real advantage in stressful live situations.

Technical Details – Full Control Across Two Frequency Bands

The LD Systems U508 IEM In-Ear Monitoring System—863–865 MHz + 823–832 MHz consists of a powerful transmitter and a rugged receiver that are perfectly matched. The license-free frequency ranges make the system particularly attractive for bands, mobile acts, and international tours.

The transmitter (LDU508IEMT) offers 96 channels, divided into 8 groups of 12 channels each. It supports three operating modes: Mono, Stereo, and Focus. With an adjustable RF output power of 2, 10, or 30 mW, the system can be optimally adapted to any stage situation—whether it’s a small club show or a large festival stage. The OLED display provides a clear overview of frequency, channel, mode, and audio level. For maximum flexibility, balanced XLR and 6.3 mm jack connectors (combo TRS) are integrated.

A particular highlight is the built-in 3-band equalizer with parametric midrange controls—allowing for precise adjustment of the input signal. In addition, the transmitter features an adjustable headphone output that allows you to monitor the input signal directly. A switchable limiter protects against level peaks, while the three-level squelch ensures a clean sound. The device is powered by a 12–18 V DC power supply and comes equipped with a BNC antenna and a rack-mount kit—for seamless integration into existing systems.

The receiver (LDU508IEMR) is lightweight, compact, and yet extremely powerful. It also offers 96 channels, which can be conveniently synchronized with the transmitter via infrared. The OLED display provides real-time information on the channel, RF signal, and battery status. With a runtime of up to 10 hours on just two AA batteries, the receiver offers exceptional endurance. The output power is 80 mW (at 33 ohms)—enough to be heard clearly even on loud stages.

Controls are located on the side and include buttons for volume, channel selection, and power on/off. The 3.5 mm headphone output is compatible with nearly all standard in-ear headphones. As with the transmitter, the three-level squelch ensures consistently clear signal transmission, even in challenging radio environments.

Your ideal partner for touring, live performances, and events

The LD Systems U508 IEM In-Ear Monitoring System—863–865 MHz + 823–832 MHz—is designed for professionals who value reliability, versatility, and sound fidelity. The ability to use two license-free frequency ranges allows for interference-free operation of up to six systems simultaneously—ideal for bands and stage productions. Convenient setup via infrared, storable user presets, and an intuitive menu system ensure a smooth workflow during rehearsals and live performances.

The combination of powerful wireless technology, rugged construction, and well-designed operation makes the U508 IEM a reliable partner on any stage. Whether on tour or in a permanent installation, this system ensures professional monitor sound that meets all requirements. The system is also a worthwhile long-term investment, as its flexible frequency selection, high-quality components, and modular expandability make it ideally equipped for future challenges.

Features:

• In-ear monitoring system in the license-free frequency range 823–832 MHz + 863–865 MHz
• Ideal for use throughout Europe without additional authorization
• 96 selectable channels in 8 groups of 12 channels each
• Operating modes: Mono, Stereo, and Focus Mode
• Switchable RF transmit power: 2 mW, 10 mW, 30 mW
• Range over 100 meters
• 3-band EQ with parametric midrange
• Switchable limiter and multi-stage squelch
• Infrared synchronization of transmitter and receiver
• OLED displays for a clear overview
• Headphone output on the transmitter for signal monitoring
• Frequency response: 40 Hz – 16,000 Hz
• Receiver with 3.5 mm stereo jack output
• Receiver output power: up to 80 mW @ 33 ohms
• Receiver runtime: up to 10 hours with 2 AA batteries
• Transmitter with balanced XLR and TRS combo jacks
• Transmitter power supply: 12 – 18 V DC
• Package contents: Transmitter, receiver, BNC antenna, AC adapter, rackmount kit, batteries

Specs:

• Type: InEar System
• Theme: PA and Sonication

Instruction manual / Safety instructions:

• Manual (5.28 MB)

Further links:

• Print View