RDL RU-MLD4 Microphone/Line Distribution Amplifier, 1x4

Deliver clean, dependable audio to multiple endpoints with the Radio Design Labs RU-MLD4 1x4 microphone/line distribution amplifier. Built for integrators and AV/security professionals, this compact audio distribution unit simplifies routing of a single mic or line source to four isolated outputs—ideal for paging, recording, CCTV audio, surveillance monitoring and conference rooms. The RU-MLD4 features both front-panel XLR jacks and rear detachable terminal blocks that remain active simultaneously for maximum installation flexibility and easy service. Switch-selectable MIC/LINE input, two mic gain settings and 24 Vdc phantom power accommodate dynamic and condenser microphones; individual output switches let you set each feed to mic or line level. Outputs can be wired balanced or unbalanced and are isolated to minimize noise and ground-loop issues. With a front-panel gain trim and dual-LED VU meter calibrated to +4 dBu, on-site level adjustments and monitoring are fast and accurate. Powered by 24 Vdc and spanning a wide audio frequency range, the RU-MLD4 is a reliable choice for security, surveillance and pro-audio installations—contact us to specify or order for your next project.

• Distribute a single mic or line source to four isolated destinations for reliable audio feeding in AV, paging, security and surveillance systems
• Front-panel XLRs plus rear detachable terminal blocks are active simultaneously for flexible installation and fast serviceability
• Switch-selectable MIC/LINE input, selectable mic gain and 24 Vdc phantom power make it compatible with a wide range of dynamic and condenser microphones
• Individually switchable, isolated outputs prevent ground loops and protect downstream recorders, mixers and monitoring devices
• Front-panel gain trim and LED VU metering allow quick field balancing and visual level confirmation for consistent monitoring