This part is a kind of semiconductor called AN7168.

Function of this product has Dual 5.8W Audio Power Amplifier Circuit.

Manufacturers : Panasonic Semiconductor

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Some of the text within the PDF file :

ICs for Audio Common Use AN7168 Dual 5.8W Audio Power Amplifier Circuit s Overview The AN7168 is an integrated circuit designed for low distortion, low noise and low power dissipation audio set of 5.8W (13.2V, 4Ω) output. Stereo operation is enabled due to incorporating two amplifiers on one chip. 12-pin SIL package enabled compact and high integrated set. Thermal protection, short protection and excessive protection circuits are built in. 5.9±0.25 7.7±0.3 7.8±0.25 ø 3.6 12 Unit : mm 29.96±0.3 28.0±0.3 20.0±0.2 0.6±0.1 s Features • Highly stable operation • Low distortion • Low quiescent current • Low noise • Low shock noise from power ON/OFF operation • Built-in muting circuit • Fewer external components • Incorporating protection circuits s Pin Descriptions [ ... ]

AN7168 PDF Datasheet Download