ART MX225U Stereo Dual-Source 5-Zone Distribution Mixer

The ART MX225 is a 5-zone distribution mixer that accepts two stereo source inputs and independently routes both to five balanced output zones — delivering flexible, low-noise distributed audio in a single rackmount space. Designed for permanent installation, it handles restaurants, conference rooms, houses of worship, and any multi-zone commercial audio application where two program sources need to reach multiple areas simultaneously.

For integrators searching for an affordable 5-zone audio distribution mixer, the MX225U covers the essentials without compromise. Each zone provides independent level controls for Source 1 and Source 2, a switchable stereo/mono mode that sums the left and right channels for single-speaker zones, and a five-segment LED meter with clip indicator. This per-zone flexibility makes the MX225U a practical ART Pro Audio MX225U dual-source zone mixer for installed AV environments where different rooms need different program mixes.

All four inputs and ten outputs use balanced XLR connectors, maintaining signal integrity across long cable runs typical in commercial installations. The built-in power supply eliminates the need for an external wall-wart, and the 1U form factor integrates cleanly into any standard equipment rack. With a signal-to-noise ratio exceeding 90 dB and total harmonic distortion of just 0.05%, the MX225U delivers transparent, professional-grade audio distribution at an entry-level price point.

Key Features of the ART MX225U Zone Distribution Mixer

• Dual Stereo Source Inputs: Accepts two independent stereo (or mono) program sources via balanced XLR, with both routed internally to all five zone channels for maximum routing flexibility.
• Five Independent Zone Outputs: Each zone provides dedicated Source 1 and Source 2 level controls and balanced left/right XLR outputs, enabling a unique mix in every room or area.
• Per-Zone Stereo/Mono Switching: A dedicated stereo/mono selector on each zone sums left and right channels into a single mono signal — ideal for zones served by a single ceiling speaker or column array.
• Five-Segment LED Metering Per Zone: LED meters at -25, -20, -15, -10 dB, and Clip give installers and operators an at-a-glance view of signal activity and headroom across every zone simultaneously.
• All-Balanced XLR I/O: Balanced connections on all 4 inputs and 10 outputs eliminate hum and noise over long cable runs in commercial environments.
• Built-In Power Supply, 1U Rackmount: The integrated power supply and single-rack-space enclosure simplify installation and keep equipment racks tidy.
• Source Presence Indicators: Dedicated LEDs for Source 1 and Source 2 confirm signal activity at the input stage, making troubleshooting faster during setup and service calls.

Technical Specifications

• Inputs: 4x XLR (balanced)
• Outputs: 10x XLR (balanced)
• Input Impedance: 47kΩ
• Output Impedance: 200Ω
• Maximum Input Level: +20 dBu
• Maximum Output Level: +24 dBu (balanced)
• Maximum Gain: +6 dB
• Total Harmonic Distortion: 0.05% typical
• Signal-to-Noise Ratio: >90 dB typical
• Power Requirements: 105–125 VAC / 50–60 Hz, 15W typical
• Rack Format: 1U
• Dimensions (H x W x D): 1.75" x 19" x 7.25"
• Weight: 5.34 lbs