100W 2.1 Wireless Amplifier Board

This amplifier board provides discrete 2.1 channel output: left/right stereo channels plus a standalone 100W subwoofer channel. Its footprint is designed for space-constrained enclosures; typical unit weight is 350g. Core components include a multiband crossover network, Bluetooth 5.0 wireless receiver module, 3.5mm aux input, and Class D amplifier stages. Power input is DC-only, compatible with 12V and 24V supplies. PCB layout prioritises signal integrity and thermal dispersion using reinforced copper traces and heat-dissipating substrate. The multiband frequency division ensures accurate spectral allocation — deep bass below 120Hz routed solely to the subwoofer, while midrange and treble remain focused in the stereo pair — resulting in cleaner imaging and more natural soundstage depth. The 100W subwoofer section uses dynamic compression and thermal protection to sustain punchy, articulate low-end even during prolonged playback. Suited for DIY home theatre builds replacing bulky AV receivers; portable multimedia stations for offices or student rooms; and mobile audio upgrades in cars, campers, or marine applications — all benefiting from wireless simplicity, robust DC operation, and authentic 2.1 channel fidelity without AC infrastructure.