The modified C-Class Sixteen model of the Harman card company in 1976 is able to deliver 400 watts of power through a 4-ohm speaker with an AB class Amplifier circuit . The power transistors 2SC5200 and 2SA1943 use the... Electronics Projects, Amplifier Circuit 400W Harman kardon Modified Clone "audio amplifier circuits, transistor amplifier, " Date 2019/08/04