The DMA 504 is a versatile four-channel Class-D matrix amplifier providing 500 W per channel, designed for business music and installed sound systems. With onboard digital signal processing (DSP), the unit includes equalization, FIR filtering, bass enhancement, and advanced routing capabilities. Each channel is equipped with presets optimized for RCF speakers, ensuring high-quality sound and system reliability. The amplifier supports a flexible and scalable multi-room architecture through a simple CAT5e connection and offers remote configuration via front-panel controls or RDNet software. The DMA 504 is engineered for ease of use, robust performance, and adaptability across various installations.
Features
4 x 500 W Class-D amplifier channels
20 Hz to 20,000 Hz frequency response
Full onboard DSP with EQ, limiters, compressors
FiRPHASE linear phase filters
RCF speaker presets for optimal tuning
Bass enhancer algorithm for rich low-end
RDNet-ready for networked control and monitoring
Supports scalable multi-room architecture
Remote control and paging console compatibility
Simple front-panel configuration with OLED display
Specifications
| Amplifier Class | D |
| Output Power | 4 x 700 W @ 2.7 Ω, 4 x 500 W @ 4 Ω, 4 x 300 W @ 8 Ω |
| Bridged Output Power | 2 x 1100 W @ 4 Ω, 2 x 1000 W @ 8 Ω |
| Output Power @ 70 V | 2 x 1000 W |
| Frequency Response | 20 Hz ÷ 20000 Hz |
| Distortion (THD+N) | <0.05% @ 1 kHz nominal power |
| Total Inputs | 5 |
| Balanced Inputs | 2 |
| Unbalanced Inputs | 3 |
| Mono Inputs | 2 |
| Stereo Inputs | 3 |
| Mic+Line Inputs | 1 |
| VOX | Yes |
| Paging Inputs | 1 (RJ45) |
| General Purpose Inputs | 1 |
| Signal Outputs | 1 (Stereo/Sub RCA, 4-Channel Audio Bus RJ45) |
| DSP Processing | Yes |
| EQ Filters | Yes |
| FIR Filters | Yes |
| Compressors | Yes |
| Tone Controls | Yes |
| High-Pass Filter Range | 80 Hz ÷ 200 Hz |
| RCF Speaker Presets | Yes |
| Cooling | Forced |
| Protection | Short Circuit, Thermal, DC, Fuses, VHF |
| Operating Voltage | 90-240 V~ 50/60 Hz |
| Max Power Consumption | 800 W |
| Compliance | CE Compliant |
| Cabinet Material | Metal |
| Color | Black |
| Rack Mounting | 19″, 2U |
| Height | 96 mm / 3.78 inches |
| Width | 430 mm / 16.93 inches |
| Depth | 360 mm / 14.17 inches |
| Weight | 6.2 kg / 13.67 lbs |
| Package Height | 210 mm / 8.27 inches |
| Package Width | 550 mm / 21.65 inches |
| Package Depth | 470 mm / 18.5 inches |
| Package Weight | 7.6 kg / 16.76 lbs |
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