1. The output filter network uses a range of capacitors, including RIFA EVOX and BP, along with other capacitors, with careful matching to deliver purer sound and broader dynamics. A capacitive array provides large scale filtering, and proper capacitor pairing is key to reducing loss and improving overall sound quality. 2. The Class D power amplifier can deliver sound quality comparable to Class AB while maintaining the efficiency of a modern Class D design. The power amplifier board is built around the original TK2050 digital chip, carefully designed for low distortion, efficiency, and small footprint, making it a upgrade choice for enthusiasts. 3. The latest version features line improvements and a largecapacity filter network up to 6000 uF, resulting in noise operation. The overall performance is a step up from the previous version, with better sound quality and higher power. Materials have been upgraded, with most components chosen as grade. The Class D digital power amplifier board is not matched by generic ABclass boards such as TDA7492 or TPA3116 in terms of distortion and power, delivering noticeably stronger performance. 4. The board's key strength lies in its use of materials to achieve sound. It uses audiospecific capacitors such as BP and RIFA EVOX, among others, with thoughtful capacitor combinations to reduce loss and optimize each capacitor's characteristics. A capacitive array provides largescale filtering, and the design uses a single widevoltage power supply, which also eases adoption in dualsupply configurations. 5. Applications and use scenarios Home hifi upgrade: integrate with existing speakers and audio sources to achieve clearer detail, reduced noise, and stronger dynamic range. DIY audio projects: suitable for custom amplifier enclosures or multiroom systems where compact size and efficiency matter. Desktop and gaming audio: connect to a PC or DAC to improve overall sound quality, imaging, and transient response in a smallform setup.