Knoll Systems ILLUSION 2 15-Watt Integrated Stereo Amplifier With Bass, Treble and Balance Controls Versatile Single-Source Amplifier With Adjustable Gain Includes Volume, Bass, Treble & Balance Adjustments 15W Rms Per Channel Rating Can Be Used With Computer Sound Cards, Extra Rooms Of Distributed Audio, Mp3 Players & Anywhere Quality Sound Is Required Each Channel Is Protected From Overheating, Overloading, Over-Voltage & Under-Voltage