Here you have a chance to buy Filter & Accessory Board F-2573. The board is complete and undamaged but it is untested. The board was carefully removed from amplifier and as you can se on the pictures, it is without damages and burned elements.

*Those parts / boards are used, and bought long time ago as spare parts, so they could be good for Sansui AU9900 or AU9900A or AU11000 or AU11000A, but I am not sure for what exactly model some part / board is… So before buying, be sure that the part/board you need is exactly the one you plan to buy!