RDL RU-MX4L Professional 4-Channel Line Level Mixer, Microphone and Line Output

For integrators who need reliable, compact mixing for AV, paging or surveillance audio, the Radio Design Labs RU-MX4L pro audio mixer delivers flexible, professional performance. This 4-channel line-level mixer accepts balanced XLR or unbalanced phono inputs on every channel, letting you combine feeds from cameras, microphones, recorders, and console outputs without adapters. Front-panel level controls and individual channel VU meters — plus a master LED arc meter — give operators precise visual monitoring and repeatable levels for security and monitoring systems. The balanced XLR output is switchable between mic and line level, simplifying connections to recorders, PA systems, or monitoring consoles. Built for system racks and tight equipment closets, the RU-MX4L is 1U compact and can be expanded across multiple units using the RU-RA3HD rack adapter. Powered by 24V DC and available with an optional output isolation transformer, it minimizes noise and ground-loop problems common in surveillance and professional AV installs. Ideal for surveillance audio, conference rooms, paging, and multi-source monitoring environments — contact sales to request a quote or specify the RU-MX4L for your next installation.

• Flexible input compatibility: accept balanced XLR or unbalanced phono on each of four channels for seamless integration with existing AV, paging, or surveillance systems
• Precise level control and visual monitoring: front-panel gain knobs plus channel and master VU meters ensure consistent audio for security and monitoring applications
• Versatile output configuration: switchable balanced XLR mic/line output supports direct connection to mixers, recorders, or PA systems without extra gear
• Compact, rackable design: space-saving 1U form factor can be expanded (up to 3 units per RU-RA3HD) for larger installations
• Reliable, install-friendly operation: 24V DC power and optional output isolation transformer reduce noise and ground-loop issues in sensitive environments