Audio Source AD508 Eight-Channels Four Zone Digital Power Amplifier Product Details 8 channels rated at 65 watts into 8 ohms 100 watts per channel into 4 ohms 200 watts x4 bridged mono at 8 ohms 8 channels (4 stereo zones) 8 independent level controls Features IR Remote control 2 Line Bus inputs 2 Line Bus outputs Independent inputs for all 8 channels Master level controls for Bus 1 and 2 Phoenix-style speaker connectors Optical input Rear mounted treble and bass controls High efficiency class D topologies Black anodized brushed aluminum faceplate Bridgeable outputs OTP Protection (over temperature protection) OCP Protection (over current protection) LED status indicator lights Manual, auto, or triggered on/off Rack mountable (Rack ears included) Stereo line outputs 2 year warranty Specifications Input Sensitivity: Variable, .350mV to full output with all level controls at max Frequence response: 20Hz to 20Hz Channel Crosstalk: 60 dB Less than 0.2% THD into 8 ohms at rated power S/N Ratio: 100 dB A-weighted