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

High-Fidelity Audio Performance Powered by dual TPA3221 HIFI chips, this board delivers 100W2 (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 drivecompatible 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 damageideal for prolonged use. ^^ Reliable Support Backed by 24/7 customer service. Contact us for any questions or issueswe guarantee a 100% satisfactory resolution.