Uses the TPA3116 audio amplifier IC for efficient, reliable stereo amplification. PCB construction: The PCB is 1.6 mm thick, doublesided, with 2.0A copper, and a full tin spraying process to ensure good current flow performance. Firstclass PCB quality. Power and signal stability: The main signal circuit uses electrolytic capacitors totaling 4 x 470UF to ensure strong and continuous power delivery to the signal path. Noise performance: precision chip resistors are used to ensure a good signaltonoise ratio across the unit. Applications and use scenarios: Build a compact stereo system or DIY amplifier for small bookshelf speakers or desktop setups. Upgrade an existing audio system with a TPA3116based amplification module to improve efficiency and performance. Educational or hobbyist projects for experimenting with audio amplification and signal integrity.