The UP 8502 power amplifier features two independent 250 W channels, providing high-efficiency performance with digital Class D amplification. Designed for mission-critical applications like voice evacuation systems, it offers seamless operation on both AC mains and 48 V DC backup power. It includes two audio inputs per channel, front-panel status LEDs, and a built-in priority circuit, ensuring clear message delivery during emergencies. Like other models in the UP 8500 series, it omits output line transformers to maintain a lightweight, compact 1U rack design. Thanks to RCF’s innovative power supply and amplification technology, the UP 8502 ensures professional-grade audio quality while complying with EN 54-16 safety standards when paired with DXT 7000 voice alarm systems.
Features
2 x 250 W Class D power amplifier for 100 V line systems
2 inputs per channel for flexible connectivity
Dual AC (220–240/115 V) and 48 V DC power support
Priority circuit ensures emergency message override
Status LEDs on front panel for signal and fault monitoring
No output line transformers for compact design
EN 54-16 certified for voice alarm compliance (with DXT 7000)
Full protection circuitry: thermal, short circuit, DC
Forced cooling for reliable operation
1U rack-mountable metal chassis
Specifications
| Amplifier Class | D |
| Output Power @ 100 V | 2 x 250 W |
| Frequency Response (-3 dB) | 40 Hz ÷ 16,000 Hz |
| Crosstalk | <70 dB |
| Distortion (THD+N) | <0.3 % @ 1 kHz nominal power |
| Total Number of Inputs | 4 |
| Balanced Inputs | 4 |
| Mono Inputs | 2 |
| Stereo Inputs | 2 |
| Line Inputs | 4 |
| General Purpose Inputs (GPI) | 4 |
| General Purpose Outputs (GPO) | 1 |
| Priority Circuit | Yes |
| Cooling | Forced |
| Short Circuit Protection | Yes |
| Thermal Protection | Yes |
| DC Protection | Yes |
| Fuses | Yes |
| Operating Voltage | 220-240/115 V~ 50/60Hz |
| Voltage Selection | Internal |
| DC Power Support | Yes (48 V) |
| Power Consumption (Max) | 800 W |
| Safety Compliance | CE compliant |
| EN 54-16 Certification | Yes |
| CPR Number | 1438-CPR-1093 |
| Cabinet/Case Material | Metal |
| Color | Black |
| Rack Mounting | 19″, 1U |
| Height | 44 mm / 1.73 inches |
| Width | 482 mm / 18.98 inches |
| Depth | 375 mm / 14.76 inches |
| Weight | 5.2 kg / 11.46 lbs |
| Package Height | 180 mm / 7.09 inches |
| Package Width | 550 mm / 21.65 inches |
| Package Depth | 480 mm / 18.9 inches |
| Package Weight | 7.2 kg / 15.87 lbs |














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