Construction and materials: The PCB is a 1.6 mm thick doublesided sheet metal board with a copper thickness of 2.0A and a full tin spraying process to enhance current flow performance. This design delivers solid mechanical stability and reliable electrical paths for steady operation. Firstclass PCB quality. Power and stability: The main circuit uses SMD electrolytic capacitors configured as 4 x 470UF to ensure strong and continuous power delivery and stable operation under load. Amplifier technology: Integrated with the TPA3116 audio amplifier IC for efficient and reliable amplification performance. Signal integrity: precision chip resistors are used to ensure a good signaltonoise ratio across the entire system, promoting clear and lownoise sound reproduction. Use scenarios and compatibility: DIY stereo applications: Ideal for building compact bookshelf or desktop amplifiers with clean power and low noise. Small powered speakers or soundbars: Suitable as the amplification module for compact multimedia speakers. Entrylevel professional/monitor setups: Appropriate for smallscale audio monitoring or PArelated projects requiring reliable amplification. Key attributes at a glance: function audio amplification module with TPA3116; compatibility suitable for standard DIY and smallscale audio projects; size/structure 1.6 mm thick doublesided PCB with tinsprayed copper; material sheet metal PCB with 2.0A copper; performance strong power delivery from 4 x 470UF capacitors and lownoise operation from precision resistors.