QSC RMX 850a 2ch Power Amplifier Professional Rackmount Power Amp

The QSC RMX 850a 2 Channel Power Amplifier delivers professional-grade performance and reliability in a compact, rackmountable design. Incorporating road-tested QSC circuitry, this high-performance amplifier is equipped with high-current toroidal transformers for greater 2-ohm power and reduced noise. Clip limiters and selectable low-frequency filters ensure optimal sound clarity and speaker protection. Offering up to 430 watts per channel at 2 ohms and 830 watts mono bridged at 4 ohms, the RMX 850a is ideal for mobile DJs, event setups, or small venue installations. Independent gain controls, extensive I/O, and onboard protection features make this a versatile and dependable choice for audio professionals.

Features
Professional-quality stereo power amplifier with road-proven QSC design
High-current toroidal transformers for greater 2-ohm power and reduced noise
Selectable low-frequency filters at 30Hz or 50Hz to protect speakers and increase headroom
Independent user-defeatable clip limiters for reduced distortion
Signal and clip LED indicators for precise monitoring
Front-panel gain controls for easy access during performances
Independent DC and thermal overload protection on each channel
Binding post and locking SpeakON output connectors
Compact and rackmountable for mobile or permanent setups
Variable-speed cooling fan for thermal stability

Specifications
Power Output (Stereo - 8 Ohms): 200 W per channel
Power Output (Stereo - 4 Ohms): 300 W per channel
Power Output (Stereo - 2 Ohms): 430 W per channel
Power Output (Bridged Mono - 8 Ohms): 600 W
Power Output (Bridged Mono - 4 Ohms): 830 W
Signal-to-Noise Ratio: > 100 dB
Total Harmonic Distortion: < 0.05%
Input Sensitivity (8 Ohms): 1.15V (+3.4 dBu)
Frequency Response: 20 Hz – 20 kHz
Input Impedance: 10 kΩ (unbalanced), 20 kΩ (balanced)
Input Stage Clipping: 10 V rms (+22 dBu)
Voltage Gain: 31.6x (30 dB)
Damping Factor: > 300 @ 8 Ohms
Output Circuitry: Class AB
Inputs: 2 x 1/4" TRS Jack, 2 x XLR, Barrier Strip
Outputs: 2 x SpeakON, Binding Posts
Controls: AC Power Switch, 2 x Channel Gain Knobs, 10-Position DIP Switch
Indicators: Power, Signal, Clip/Protect LEDs
Amplifier Protection: Short Circuit, Open Circuit, Thermal, Ultrasonic, RF
Cooling: Variable Speed Fan
Height: 89 mm
Rack Size: 2U
Weight: 15.9 kg