RDL RU-MX4T Professional 4-Channel Microphone/Line Mixer with Phantom Power and Transformer

Designed for integrators who need reliable, professional audio mixing for AV, security, and monitoring applications, the Radio Design Labs RU-MX4T Pro Audio Mixer delivers flexible, low-noise performance in a compact rack-friendly package. This 4-channel mic/line mixer accepts balanced XLR microphone inputs or unbalanced phono line inputs on every channel, with individually switchable 24V phantom power to support condenser mics where required. Front-panel dual-LED VU meters per channel plus an LED arc for the final mix give technicians fast, accurate level feedback. A rear-panel switchable soft-knee compressor/limiter tames peaks for consistent intelligibility in surveillance or paging systems. The RU-MX4T provides a switchable balanced XLR output (mic or line), an unbalanced line output, and a direct input for cascading multiple units — ideal for expanding mixing capacity across control rooms or distributed audio systems. With a wide frequency response (up to 30 kHz), studio-grade circuitry, and transformer-isolated output to eliminate ground-loop noise, this Radio Design Labs pro audio mixer is built for demanding installations. Add the RU-MX4T to your rack for reliable microphone and line mixing in broadcast, security, and monitoring deployments.

• Flexible mixing of balanced XLR mic and unbalanced phono line inputs on each channel for seamless integration with AV, security, and surveillance systems
• Individual 24V phantom power switches per channel to support condenser microphones where required
• Switchable balanced XLR mic/line output plus unbalanced line out and direct input for easy expansion and daisy-chaining
• Built-in soft-knee compressor/limiter and front-panel dual-LED VU meters for smooth, professional level control and accurate monitoring
• Low-noise, studio-quality performance with factory-installed transformer-isolated output (RU-MX4T) to reduce ground loops in critical installations
• Compact, rack-friendly design engineered for broadcast, monitoring, and security audio applications