200W amplifier circuit Pioneer (Pioneer-PR-200N) is an old sound system versiyorun pcb printed circuit board design is quite small clone 5w 0.22 ohm resistors have been under a lot of savings from the card this way, monta has been... Electronics Projects, 2SC5200 2SA1943A Amplifier Circuit Pioneer 200W "audio amplifier circuits, transistor amplifier, " Date 2019/08/03