RU-MLB4

RDL RU-MLB4 - bidirectional Dante 4x4 network interface for microphone and line signals

The RDL RU-MLB4 is a bidirectional Dante audio interface from Radio Design Labs, which supports 4 channels in each direction within a single module. The device is designed for rack enclosures, technical rooms, conference tables, shelves, and mounting panels in commercial and industrial installations. The input section converts 4 microphone or line sources to Dante channels, and the type of signal for each input is selected using the MIC/LINE switch on the rear panel. The line inputs have separate terminals for balanced +4dBu and unbalanced -10dBV signals. Automatic microphone gain of -40dB for condenser microphones and 60dB for dynamic microphones ensures that neither the user nor the installer needs to adjust the gain. Each microphone input has phantom power P48. The output section converts 4 Dante channels to balanced line outputs +4dBu (at -18dBFS) with a headroom above 18dB. 24-bit conversion, RDL analog filtering, and green signal and network synchronization LEDs ensure high sound quality and clear operational control. The RU-MLB4 is powered by an external 24V DC power supply (available separately), and a PoE-powered variant is offered as a separate model RU-MLB4P. The completely metal housing allows for free-standing, surface, or rack mounting. The device is designed and manufactured in the USA. The product comes with a 7-year manufacturer's warranty.

Functionality

• 4 inputs and 4 Dante outputs in one device
• Conversion of 4 microphone or line sources to Dante channels
• MIC/LINE switch for each input on the rear panel
• Automatic microphone gain - 40dB (condenser microphones), 60dB (dynamic microphones)
• No need for gain adjustment by the user or installer
• Phantom power P48 on each microphone input
• Unbalanced -10dBV or balanced +4dBu line inputs with separate terminals, headroom above 18dB
• Conversion of 4 Dante channels to balanced line outputs +4dBu, headroom above 18dB
• 24-bit A/D and D/A processing
• RDL analog filtering
• Signal LEDs for each input and each channel received from the network
• Dante network status and synchronization LEDs
• Powered by an external 24V DC power supply via socket or terminal block

Features

• Bidirectional operation - sending and receiving 4 audio channels over the Dante network in one module
• Compatible with dynamic and condenser microphones as well as professional and consumer line sources
• Quick installation due to automatic gain selection
• High sound quality with low noise and distortion
• Clear operational signaling - signal, network, synchronization, and power
• Detachable terminal blocks for easy connection and servicing
• Durable, all-metal housing
• Free-standing, surface, or rack mounting with RACK-UP accessories
• Designed and manufactured in the USA, compliant with TAA
• 7 years manufacturer's warranty

RDL RU-MLB4 is an efficient Dante interface that combines the sending of 4 microphone or line signals to the network and their reception on 4 line outputs in a compact module. Automatic gain, phantom power, high-quality conversion, and solid construction make it a practical solution for demanding network audio installations.