The 900N is a highperformance power amplifier for balanced or unbalanced stereo audio signals. Either input can deliver a speaker output of 8.4 watts RMS power per channel into a 4 load.N/A- High Efficiency - Class D operation.N/A- S/N Ratio - 55dB.N/A- Controls - Volume knob On LED.N/A- Special Note - Before turning on the 900N make sure the volume is turned down to the minimum.N/A- Compact Kramer TOOLS - 3 units can be rack mounted sidebyside in a 1U rack space with the optional RK3T rack adapter.N/AN/AApplications:N/A- Presentation rooms and multimedia applications for quick local audio amplification.N/A- Personal audio listening (for example a PC and portable CD player).