{"product_id":"damgoo-zk-tb21-bluetooth-amplifier-board-50w-50w-100w-output-12-24v-bluetooth-5-1-dajunguo-zk-tb21-black","title":"DAMGOO ZK-TB21 Bluetooth Amplifier Board — 50W+50W+100W Output, 12-24V, Bluetooth 5.1, DAJUNGUO ZK-TB21 Black","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe DAMGOO ZK-TB21 is a compact 2.1 channel Bluetooth amplifier board engineered to deliver robust, immersive sound in a small form factor. With Bluetooth 5.1 and a 3.5 mm AUX input, it’s easy to connect a wide range of devices—from smartphones to TVs and laptops—so you can elevate your everyday listening setups without clutter.\u003c\/p\u003e\n\u003ch3\u003ePower and performance\u003c\/h3\u003e\n\u003cp\u003eDriven by the TPA3116D2 HIFI chip, this board provides two main channels plus a powerful 100 W path for bass-enhanced configurations. A THD specification of ≤ 0.1% indicates clean, faithful sound across a broad DC input range of 12–24 V, making it adaptable for home, workshop, or vehicle use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo 50 W channels plus a 100 W boost path for dynamic, room-filling audio\u003c\/li\u003e\n  \u003cli\u003eTHD ≤ 0.1% for clear and accurate reproduction\u003c\/li\u003e\n  \u003cli\u003eWide 12–24 V DC input supports multiple installation scenarios\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConnectivity and range\u003c\/h3\u003e\n\u003cp\u003eThe design includes both an onboard IPX antenna base and an external IPX (MHF1) antenna, improving signal strength and range without the need for soldering. This makes placement and adjustments easier in different room layouts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBluetooth 5.1 plus 3.5 mm AUX inputs offer flexible source options\u003c\/li\u003e\n  \u003cli\u003eDual antennas improve stability and reach\u003c\/li\u003e\n  \u003cli\u003eCustomizable Bluetooth name to suit your setup, e.g., “DAJUNGUO ZK-TB21 Black”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety and support\u003c\/h3\u003e\n\u003cp\u003ePractical protections guard against overheating, reverse polarity, and voltage fluctuations, helping maintain reliable performance during regular use. The seller highlights responsive after-sales support and a commitment to customer satisfaction.\u003c\/p\u003e\n\u003ch3\u003eReal-world use cases\u003c\/h3\u003e\n\u003cp\u003eEnvision this board powering a compact home theater booster, a desk-side audio workstation, or a portable speaker rig for events. The flexible power options, easy source switching, and name customization contribute to a setup that can grow with your needs while staying streamlined and user-friendly.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What devices can I connect to the ZK-TB21 amplifier board?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It supports Bluetooth 5.1 and 3.5mm AUX, compatible with most smartphones, TVs, and laptops for quick audio streaming.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the ZK-TB21 require soldering for the antenna?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No; it includes onboard and external IPX (MHF1) antenna base for improved signal without soldering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DAMGOO","offers":[{"title":"Default Title","offer_id":48410100629661,"sku":"B0FN8CXZSY","price":31.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/damgoo-zk-tb21-bluetooth-amplifier-board-front.jpg?v=1781202882","url":"https:\/\/nexoltic.com\/products\/damgoo-zk-tb21-bluetooth-amplifier-board-50w-50w-100w-output-12-24v-bluetooth-5-1-dajunguo-zk-tb21-black","provider":"Nexoltic","version":"1.0","type":"link"}