Ah, my 2 channel amp weighs 43lbs. and has a normal operating temperature of 97 degrees F.. And consumes 250W while idoling!... The owners manual does not say how many voltage rales it has.. but says the normal RMS voltage is 49v...

The A/B design is a much more efficient design.. so you can get much more power out of a smaller package, with less energy "waisted", but if you want a nice space heater. Class A all the way laugh