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Russound R850MC

4 Zone/8 Channel Multiroom Amplifier (50W)

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4 Zone/8 Channel Multiroom Amplifier (50W) R850MC

The Russound R850MC is an 8-channel power amplifier ideal for use as the main amplifier in home theater and distributed audio systems. The eight channels are arranged in pairs to provide amplification for four stereo zones.

The R850MC provides an array of useful features such as autosensing line inputs, bridged mono operation, independent zone triggering, bus inputs and multiple speaker outputs per zone to meet a wide variety of applications and configurations.

The R850MC is rated at 50 watts per channel into 8 ohms and 80 watts per channel into 4 ohms. With a zone’s mode switch set in the Bridge Mono position, both channels in the zone are combined for a mono output of 140 watts into an 8-ohm load. All this power is supplied by two high-output toroidal transformers. Each output channel incorporates robust protection circuitry for safety and reliability under extreme circumstances.

Standard Features

  • Ideal for home theater and four-zone distributed audio systems
  • Zones are bridgeable to create flexible power configurations
  • Robust circuitry designed for stability under demanding loads
  • Installs with either attached feet or included rack ears
  • Autosensing line inputs activate amplifier zones upon detecting audio signals


Amplifier Channels 8
Frequency Response 20 Hz to 20 kHz +/-0.3 dB
Fuse Rating US/Canada: T10AL 250 V
Europe: T7AL 250 V
Input Impedance 47 kilohms
Input Sensitivity 70 mV for 1 W at 8 ohms
500 mV for 50 W at 8 ohms
Power Output Single Zone Maximum:
(0.1% THD+N; f=1 kHz)
50 W per channel, 2 channels at 8 ohms
80 W per channel, 2 channels at 4 ohms
140 W at 8 ohms, 2 channels bridged

All Zones Continuous:
35 W per channel, 12 channels at 8 ohms
50 W per channel, 12 channels at 4 ohms
100 W at 8 ohms, each zone bridged
Power Requirement(s) US/Canada: 120 VAC 60 Hz 5 A
Europe: 230 VAC 50 Hz 2.5 A
Signal to Noise Ratio >100 dB
Switching Delay 0.5 to 4.5 minutes
Total Harmonic Distortion <0.05% THD+N from 20 Hz to 20 kHz
Trigger Input(s) 12 VDC 10 kilohms
Trigger Output(s) 12 VDC 100 mA
Voltage Gain 32 dB
Zone Outputs 4


Color Black
Height (inches) 13.0"
Width (inches) 24.0"
Depth (inches) 24.0"


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