The STK411-210E is straightforward to implement. Below is a summarized circuit description based on the datasheet's reference design.
Allows the amplifier to be silenced without cutting main power. Ground (GND): Central reference point for the circuit. 3. Notable Features Built-in Muting Circuit: Stk411-210e Datasheet
The is a thick-film hybrid integrated circuit (IC) belonging to the renowned STK series developed by Sanyo (now part of ON Semiconductor). This specific module is designed for high-fidelity audio power amplification, specifically for 2-channel (stereo) applications. The STK411-210E is straightforward to implement