Fully functional hardware design with multiple interfaces, upgraded chips, a slotted heat sink, and a multifunction volume adjustment button. These features improve compatibility with a range of audio sources, enhance thermal management, and provide precise control over output. Description and features: the system integrates robust components and versatile connectivity to support reliable amplification in a compact form factor. Pair of speakers to form a stereo pair: two amplifier boards can be used together to form a stereo speaker system, delivering left and right channels through designed pairing technology. Performance and reliability: upgraded chips and the slotted heat sink work together to sustain stable operation and clear audio across typical listening levels. Compatibility and interfaces: designed to work with multiple audio sources via available interfaces, enabling easy integration into existing setups. Use scenarios: Desktop or workstation audio: pair with a computer or media player to enhance music, movies, and games with stereo separation. Small living spaces or workspaces: create a compact stereo listening setup for casual listening, video conferencing, or background playback. DIY audio projects and demonstrations: suitable for educational environments or hobby projects where building and testing a stereo pair is desired.