This post explains for the amplifier.
The Part Number is AN7062N.
The function of this IC is High Voltage Input Amplifier Circuit
The package is DI 18 Pin Type.
Manufacturer: Panasonic Semiconductor
Preview images :
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Description
The AN7062N is a high voltage integrated circuit designed for pre-driver of 60W-class Hi-Fi audio amp. Stereo operation is enabled due to two amplifiers built-in.
Features
• High voltage
• Low noise : Vni = 2.5µV (typ.)
• Low distortion : THD = 0.003% (typ.)
• Good channel separation
• Wide operating supply voltage range
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