{"product_id":"zk-st21-100wx2200w-21channel-bluetooth-amplifier-board-with-subwoofer-tpa3221-chip-basstreble-control-bluetoothauxusb-input-12-30v-wide","title":"ZK-ST21 100Wx2+200W 2.1Channel Bluetooth Amplifier Board with Subwoofer, TPA3221 Chip, Bass\/Treble Control, Bluetooth\/AUX\/USB Input, 12-30V Wide","description":"Brand: Wuzhi Audio\u003cbr\u003e\u003cbr\u003eZK-1002T wuzhi AUDIO\u003cbr\u003e\u003cbr\u003e• 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.\u003cbr\u003e• 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.\u003cbr\u003e• 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.\u003cbr\u003e• 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.\u003cbr\u003e• Reliable Support Backed by 24\/7 customer service. Contact us for any questions or issues-we guarantee a 100% satisfactory resolution.\u003cbr\u003e\u003cbr\u003eModel: Wuzhi Audio ZK-ST21","brand":"Wuzhi Audio","offers":[{"title":"Default Title","offer_id":52346121879834,"sku":"MCAB0F7W7M17G","price":47.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/6772\/2266\/files\/71OooJeNPqL.jpg?v=1781263113","url":"https:\/\/craftedyogi.com\/products\/zk-st21-100wx2200w-21channel-bluetooth-amplifier-board-with-subwoofer-tpa3221-chip-basstreble-control-bluetoothauxusb-input-12-30v-wide","provider":"Craftedyogi","version":"1.0","type":"link"}