Rolls RM424 4-input/4-zone commercial mixer
Best multi-zone mixer for commercial audio installations and public address systems.
This versatile audio mixer is designed to manage and distribute sound across four independent zones. It seamlessly integrates microphone or line-level sources with additional audio inputs, allowing any input to be routed to any of the four output zones. For public address needs, microphone inputs include switchable ducking to automatically lower background music during announcements. Monitoring is convenient with a front-panel headphone output and a built-in speaker, and the unit fits neatly into a standard 1U rack space.
$379.00
Owner Satisfaction
4.6
/ 5
Category Rank
278
/ 1141
#278 in Audio Mixers
Price vs Category Average
-61%
Below average
Inputs
423
/ ( XLR, RCA)
Who it's for
- Installers managing audio across multiple distinct commercial spaces
- Business owners needing automated background music ducking for announcements
- Technicians integrating diverse analog audio sources into one system
Who should skip it
- Novices lacking experience with complex commercial signal routing
- Audio engineers requiring precise frequency shaping for difficult rooms
- System integrators seeking modern IP-based control or digital networking
Performance breakdown
Zone Routing Flexibility
Independent routing for four zones offers exceptional control for complex commercial spaces.
Ducking Reliability
Automatic background music attenuation ensures announcements remain clear and professional.
Input Versatility
Balanced XLR and unbalanced RCA inputs accommodate a wide range of sources.
Monitoring Utility
Integrated speaker and headphone output make real-time signal verification incredibly convenient.
Build Compactness
The 1U rack-mount design maximizes functionality without sacrificing valuable equipment space.
Signal Integrity
Low harmonic distortion maintains clean audio output for standard public address applications.
Key Specs
Inputs
4 (2 XLR, 3 RCA)
Outputs
4 Balanced XLR
Phantom Power
+48VDC available on Channels 1 & 2
Dimensions
19"W x 1.75"H x 6.21"D
Weight
7 lbs.
Frequency Response
20Hz - 20kHz (± 0dB)
Total Harmonic Distortion (THD)
<0.3%
Power Supply
15VDC
Know before you buy
Yes. The RM424 allows you to assign any of the five inputs to any of the four output zones using the color-coded buttons on the front panel.
Yes, the unit features switchable 48-volt phantom power specifically for the two balanced XLR inputs, allowing you to use professional condenser microphones.
The mixer includes a ducking function that automatically lowers the volume of the background music sources whenever a signal is detected on the microphone inputs, ensuring your announcements are heard clearly.
Yes, the RM424 is equipped with both a front-panel headphone jack and a built-in speaker, allowing you to monitor the audio signal in each zone without needing external equipment.
Yes, the RM424 is designed with a 1U rack-mountable chassis, making it easy to integrate into standard professional audio racks.
The four output zones utilize balanced XLR connectors, which provide a clean, professional signal path to your external amplifiers.
Still have a question?
Ask Hayley anything about this product before you decide.