BUY STK402-040 https://www.utsource.net/itm/p/1274250.html
Two-Channel Class AB Audio Power Amplifier IC 20 W + 20 W
Description: SIP-ZIP, SANYO Features: Low distortion Low noise High output High reliability Low power consumption High input impedance High output impedance Application: STK402-040 is a power amplifier IC used in audio applications such as car audio, home audio, and portable audio systems. It is also used in other applications such as amplifying signals from microphones and other audio sources. (For reference only)