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Russound Half-Rack Digital Amplifier, 2-Channel

SKU: RUA2100

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WARNING: Cancer and Reproductive Harm –


Enhance Your Audio System With High-Powered Amplification

Add high-powered stereo amplification to your audio system with the Russound Half-Rack Digital Amplifier, 2-Channel. Designed specifically for enhancing the quality of audio output of your home stereo system, the A2100 Digital Amplifier is ideal for large rooms or outdoor areas. Add extra speakers or extra power to areas of your home where you need it the most. The A2100 can fit in just about any equipment rack, taking up a half-rack space with its 1U design. The A2100 is also includes a bridge option to allow you to combine two A2100 units to one system, producing a stereo output at 225-watts per channel (8 ohms) for smooth, yet powerful high-quality audio.

  • 2-channel amplifier adds high-powered amplification to any audio system
  • 100 watts per channel at 8 ohms and bridgeable to 225 watts at 8 ohms
  • Buffered line output allows expansion to additional amplifiers
  • Small 1U design takes up a half-rack space
  • Handles impedance as low as 4 ohms, allowing a total of four 8-ohm speakers to be used
  • Removable screw-down connectors for easy installation

System Integration

With three modes of operation, the A2100 comes with features to fully integrate with other audio components:

  • Always On: Keeps it ready for whenever you need it in your system
  • Auto On (Signal Sensing): Turns on when needed after detecting the presence of an audio signal
  • Trigger: Turns on the amplifier after detecting the presence of a 12vDC signal and turns it off when it no longer detects the signal


  • A2100 Half-Rack Digital Amplifier, 2-Channel
  • Manual

Russound Brings Engineered Innovation and Extraordinary Sound

The Russound name is synonymous with audio quality around the world. Russound delivers a complete range of multiroom audio systems, source equipment, volume controls, amplifiers, loudspeakers and intercom systems. Every audio device from Russound has been manufactured to fulfill the ideal listening experience of any user – from background music listening to premium performance in your favorite listening areas at home. Russound remains dedicated to providing its dealers and customers with the right products for their desired audio needs.


  • Manufacturer Part #: A2100
  • UPC: 612934536847
  • Continuous Output Power:
    • 100W @ 8 Ohms < 0.1% THD+N
    • 125W @ 4 Ohms < 0.5% THD +N
    • 225W Bridged @ 8 Ohms < 0.2% THD+N
  • Minimum Impedance: Stereo mode – 4 ohms, Bridged mode – 8 ohms
  • Frequency Response: 18Hz-25kHz (± 1dB) @8 ohms
  • Input Sensitivity: 500mV
  • Power Requirements (Autoswitching Power Supply): North American and European Models:100VAC to 240VAC 50/60Hz 2.5A IEC 320 type connector with 3 terminal detachable power cord
  • Standby Power: <0.5 Watts
  • Rack Ears: Included
  • Product Dimensions: 8.5(W) x 10.5(D) x 1.75(H) inches (21.59 x 26.67 x 4.45 cm)
  • Product Weight: 4.10 lbs. (1.9 kg)
  • Certifications: NOM, cULus
  • Parts and Labor Warranty: 2 Year