This part is a kind of semiconductor called TDA7499.

Function of this product has 6 + 6W STEREO AMPLIFIER WITH MUTE & ST-BY.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

TDA7499 6 + 6W STEREO AMPLIFIER WITH MUTE & ST-BY WIDE SUPPLY VOLTAGE RANGE UP TO ±18V 6 + 6W @ THD =10%, RL = 8Ω, VS = +14V NO POP AT TURN-ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW Iq) SHORT CIRCUIT PROTECTION TO GND THERMAL OVERLOAD PROTECTION Multiwatt11 ORDERING NUMBER: TDA7499 DESCRIPTION The TDA7499 is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application as Hi-Fi music centers and stereo TV sets. Figure 1: Typical Application Circuit +VS 1000µF MUTE/ ST-BY IN (L) 1µF 5 7 + 8 15K +5V µP 18K GND 9 10 IN- (R) 4 OUT (L) 18K IN- (L) 4.7Ω 100nF 560Ω 560Ω 18K 1µF IN (R) 11 + 1 6 -VS 1000µ F D94AU085 15K 1µF 3 RL (L) 2 OUT (R) 4.7Ω 100nF RL (R) May 1997 1/7 TDA7499 ABSOLUTE MAXIMUM RATIN [ ... ]

TDA7499 PDF Datasheet Download