Sansui Filter Accessory Circuit Board F-2573 for AU 9900A / 11000A
The board is in very-good condition, but it is untested, so what you see you will get it. As you can see on the pictures the board is partially restored.
If you already have Sansui Amplifier AU9900A or AU11000A, this very important board is the last chance to get one as spare circuit board.
Please look carefully at high resolution pictures, because they are part of description.