Knoll Systems ILLUSION 1 15-Watt Integrated Stereo Amplifier Versatile Single-Source Amplifier With Adjustable Gain 15W Rms Per Channel Rating Can Be Used With Computer Sound Cards, Extra Rooms Of Distributed Audio, Mp3 Players &amp; Anywhere Quality Sound Is Required Each Channel Is Protected From Overheating, Overloading, Over-Voltage &amp; Under-Voltage Protection Circuitry Automatically Restores The Amplifier Channel As Soon As Its Parameter Returns To The Safe Operating Area