This part is a kind of semiconductor called M5207L01.

Function of this product has LINEAR CONTROL DUAL VOLTAGE CONTROLLED AMP.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

M5207L01 IL08D LINEAR CONTROL DUAL VOLTAGE CONTROLLED AMP SIDE VIEW +VCC 10 9 OUT 2 8 LINE VC2 7 IN 2 NC 6 _VCC 5 4 IN 1 3 LINE VC1 2 OUT 1 GND 1 [ ... ]

M5207L01 PDF Datasheet Download