2ch AF Power Amplifier (Split Power Supply) 30W 30 W, THD = 0.08% AF Power Amplifier (Split Power Supply) (50 W 50 W 50W min THD = 0.08%) 3ch AF Power Amplifier (Split Power Supply) (25 W 25 W 25 W THD = 0.4%) AF Power Amplifier (Split Power Supply) (15 W 15 W min THD = 0.4%)