Here are the specs on the KT80. Note that it's rated output is 80 watts RMS while the input power is listed as 150 watts.

Paul C.

Motion Sound KT80 Keyboard Amp features
Features of the Motion Sound KT80 Keyboard Amp

• Clean Hi-fidelity Channel.
• Warm 12AX7 Tube Channel.
• Unique Pre and Post Tube EQ.
• Switchable Input Channel.
• XLR Microphone Input.
• Separate EQ on Hi-Fi, and Tube Channels.
• XLR Line Output.
• Twelve in. High Efficiency Speaker.
• Three point five in. x 3.5 in. Dynamic High Frequency Horn.
• Eighty Watt RMS Power Amplifier.
• Hi-Fidelity Channel - Features volume, bass and treble EQ. Clean , low distortion pre-amp to power amp design.
• 12AX7 Tube Channel - Has pre-gain, contour, post gain, bass and treble controls allowing complete control of the 12AX7 at all volume levels.
• Switchable Channel - An optional foot-pedal With led routes this input to the hi-fi channel controls or to the 12AX7-tube channel controls.
• Power Amplifier - 80 watts RMS. Short circuit, spike, and over temp protection. 117 vac 50/60 Hz 150 watts.
• Dimensions - Height 15 in. Width 18 in. Diameter 12 in. 26 LBS