ZK-ST21 100Wx2+200W 2.1Channel Bluetooth Amplifier Board with Subwoofer, TPA3221 Chip, Bass/Treble Control, Bluetooth/AUX/USB Input, 12-30V Wide

ZK-ST21 100Wx2+200W 2.1Channel Bluetooth Amplifier Board with Subwoofer, TPA3221 Chip, Bass/Treble Control, Bluetooth/AUX/USB Input, 12-30V Wide

High-Fidelity Audio Performance Powered by dual TPA3221 HIFI chips, this board delivers 100W×2 (stereo) + 200W (subwoofer) output for immersive sound. Supports wide voltage input (12-30V DC) for stable, high-power operation in car audio or home theater setups. Versatile Connectivity Seamlessly connect via Bluetooth , AUX, or USB drive—compatible with phones, TVs, laptops, and more. Plug-and-play design for hassle-free use. Precision Sound Customization Go beyond basic volume control! Adjust the dedicated bass/treble knobs to enhance audio clarity, deepen lows, and create a layered soundstage tailored to your preferences. Built-In Safety Protections Engineered with short-circuit/over-current/overheat/reverse-polarity protection. Automatically alerts the system during faults to prevent damage—ideal for prolonged use. Reliable Support Backed by 24/7 customer service. Contact us for any questions or issues—we guarantee a 100% satisfactory resolution. ZK-1002T wuzhi AUDIO