This part is a kind of semiconductor called TDA7295S.

Function of this product has 80V - 80W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

® TDA7295S 80V - 80W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY VERY HIGH OPERATING VOLTAGE RANGE (±38V) DMOS POWER STAGE HIGH OUTPUT POWER (80W @ THD = 10%, MUSIC POWER) MUTING/STAND-BY FUNCTIONS NO SWITCH ON/OFF NOISE VERY LOW DISTORTION VERY LOW NOISE SHORT CIRCUIT PROTECTION THERMAL SHUTDOWN CLIP DETECTOR MODULARITY (MORE DEVICES CAN BE EASILY CONNECTED IN PARALLEL TO DRIVE VERY LOW IMPEDANCES) DESCRIPTION The TDA7295S is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, TopFigure 1: Typical Application and Test Circuit MULTIPOWER BCD TECHNOLOGY Multiwatt15 ORDERING NUMBER: TDA7295SV class TV). Thanks to the wide voltage range and to the high out current capability it [ ... ]

TDA7295S PDF Datasheet Download