Russound A2100 2-Channel High-Power Digital Power Amplifier
The Russound A2100 is a high-performance 2-channel digital power amplifier engineered to deliver clean, robust audio power for whole-house audio zones, home theaters, and commercial sound applications. Built with advanced high-efficiency Class-D amplifier circuitry, the A2100 delivers a powerful 100 Watts per channel into 8 ohms, scaling up to 200 Watts per channel into 4 ohms, and a massive 400 Watts into an 8-ohm load when configured in bridged mode.
Designed for custom integration flexibility, the A2100 features stereo line-level inputs, loop-through outputs, versatile turn-on modes including 12V triggers and audio signal sensing, and independent rear-mounted gain controls. Housed in a durable 1U rack-mountable chassis, it provides reliable, pristine sound reinforcement for any professional or residential audio setup.
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If you are wondering how to power architectural ceiling speakers, drive an outdoor subwoofer, or set up a dedicated two-channel stereo listening zone without taking up excessive rack space, the Russound A2100 answers that exact need. Custom integrators and audio enthusiasts searching for a reliable, bridgeable stereo amplifier for whole-home audio distribution will find this Class-D powerhouse easy to install and configure for any custom project.
The Russound A2100 2-Channel Digital Power Amplifier is engineered for custom installation professionals and high-fidelity residential audio systems. Delivering a robust 100 Watts per channel into 8 Ohms (125 Watts per channel into 4 Ohms) or 250 Watts in bridged mono configuration, the A2100 provides dynamic, distortion-free output across a variety of demanding speaker applications. Its compact half-rack chassis allows dual side-by-side mounting in standard 1U equipment racks or discreet tabletop placement on audio shelving.
Featuring versatile signal sensing and automated trigger inputs, the A2100 powers on effortlessly whenever an incoming audio signal or 12V trigger is detected. Global line-level stereo RCA inputs, buffered loop outputs for cascading additional power amplifiers, and individual channel gain controls ensure seamless integration into multiroom audio distribution controllers, dedicated zone expansions, and outdoor landscape audio setups.
Features:
- High-Power 2-Channel Class D Amplification: Delivers 100 Watts RMS per channel into 8 Ohms and 125 Watts per channel into 4 Ohms with exceptional acoustic efficiency.
- Bridged Mono High-Current Operation: Easily bridges into a single-channel 250 Watt mono amplifier for passive subwoofers or high-demand single speaker zones.
- Flexible Signal Sensing and 12V Trigger: Three turn-on modes including Always On, Audio Sensing, and 12V Trigger allow seamless automation with third-party control systems.
- Buffered Line-Level Loop Outputs: RCA loop outputs allow clean signal daisy-chaining across multiple amplifiers without signal degradation.
- Compact Half-Rack 1U Footprint: Includes rack-mount ears for single or side-by-side rack installation, saving valuable space in equipment racks.
- Independent Left and Right Channel Gain Trims: Rear-panel gain potentiometers allow fine-tuning of output volume levels to balance zone dynamics.
Specifications:
- Audio Performance & Power Output:
- Continuous Output Power (8 Ohms): 100 Watts per Channel (20 Hz - 20 kHz, THD < 0.1%)
- Continuous Output Power (4 Ohms): 125 Watts per Channel (20 Hz - 20 kHz, THD < 0.1%)
- Bridged Mono Output Power (8 Ohms): 250 Watts (1 kHz, THD < 0.2%)
- Frequency Response: 10 Hz – 30,000 Hz (+/- 1 dB)
- Signal-to-Noise Ratio: Greater than 100 dB (A-Weighted)
- Input Sensitivity: 700 mV for full rated output
- Connectivity & Control:
- Audio Inputs: 1x Stereo RCA Line-Level Audio Input
- Audio Outputs: 1x Buffered Stereo RCA Line-Level Loop Output
- Trigger Terminals: 12V DC Input and Output (3.5 mm Mini-Jack)
- Speaker Outputs: Removable Screw-Down Euroblock Speaker Connector
- Physical Dimensions & Build:
- Rack Form Factor: 1U Half-Rack Width (Rack Ears Included)
- Dimensions (W x D x H): 8.5" x 10.5" x 1.75" (216 x 267 x 44 mm)
- Net Weight: 6.2 lbs (2.8 kg)
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