This part is a kind of semiconductor called MC4066.Function of this product has 1.3 W Stereo Class AB Audio Power Amplifier. Manufacturers : MegaPower Image and pinout : Some of the text within the PDF file : Free Datasheet http:// [ ... ] ATS-25 PDF Datasheet Download Metablog 2017/10/24 03:09 2017/10/24 03:09