The Sansui 800 stereo receiver MAIN AMPLIFIER PCB (x2) and OUTPUT TRANSISTOR ( X4 npn 2SD180 ) LOT as pictured . They're pulled from good working unit (tested) . Since this item is intended for professional ( Audio service techs ) : A service manual in PDF-format stored in an USB-memory stick is included and shipped along ( the usb is not shown in the pictures ) . Note : This selling is final ( no return or refund ) Please buy or bid accordingly. Thanks for looking.