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The Niles SI-2100 is a powerful 2-channel bridgeable power amplifier delivering reliable, high-current performance for custom installed A/V systems. With premium audio components and versatile features, it ensures clear, uncoloured sound and easy installation. Key Features Digital, high current bridgeable stereo amplifier 100 Watts RMS per channel into 8 Ohms (all channels driven) 220 Watts RMS per channel into 4 Ohms (all channels driven) Channels bridgeable to 400 Watts RMS into 8 Ohms Auto-switching 110V-230V power supply Three turn-on modes: Music Sense, Voltage Trigger, and Manual Voltage trigger input accepts 3-24VAC/DC Audio circuitry with 1% metal film resistors, high-quality capacitors, and oversized heat sinks for clear, uncoloured sound Independent level controls for each channel Specifications 12-volt control output Removable line cord Two-year limited warranty Rack mount ears included Tested and certified to US, Canada, EU, and Australian safety and EMC standards Dimensions: 17.25" (43.81 cm) wide × 2.25" (5.6 cm) high (including feet) × 13.5" (34.35 cm) deep Weight: 10.8 lb (4.9 kg) Warranty 2-year limited warranty included.