2.1 channel power amplifier board: 2x30W 60W Multifunctional amplifier board: Amplifies weak signals from the source or preamplifier and drives the speaker Key benefits Powerful 2.1 channel configuration: two main channels at 30W each plus an additional 60W channel for enhanced bass or sub output. Improves playback: increases signal strength to drive speakers with clearer, louder output and better dynamic range. Flexible integration: compatible with standard audio sources and preamplifiers, supporting easy upgrades to existing systems. Compact, simple design: a practical option for DIY projects, home stereo upgrades, and multimedia setups without requiring extensive enclosure space. What it does Amplifies weak signals from the source or preamplifier and drives the connected speakers, delivering improved output for a 2.1 channel arrangement. Use scenarios Home stereo upgrade: add this board to bookshelf or small floorstanding speakers to achieve higher volume and richer bass in a living room setup. DIY audio project: incorporate into a custom amplifier build to create a compact 2.1 channel system with enhanced output. Multimedia room or home theater: pair with a computer, media player, or AV source to enhance music and movie sound with dedicated main and subchannel power.