{"product_id":"zk-tb21-2-1-channel-bluetooth-amplifier-board-50w-2-100w-subwoofer-app-control-treble-bass-subwoofer-freq-adjustment-tpa3116d2-dc-12-24v-bt-5-0-aux-for-diy-home-speakers-50w-2-100w-amp","title":"ZK-TB21 2.1 Channel Bluetooth Amplifier Board – 50W×2 + 100W Subwoofer, APP Control, Treble\/Bass \u0026 Subwoofer Freq Adjustment, TPA3116D2, DC 12-24V, BT 5.0\/AUX for DIY Home Speakers 50w*2+100w AMP","description":"\u003ch3\u003eZK-TB21 2.1 Channel Bluetooth Amplifier Board – 50W×2 + 100W Subwoofer, APP Control, Treble\/Bass \u0026amp; Subwoofer Freq Adjustment, TPA3116D2, DC 12-24V, BT 5.0\/AUX for DIY Home Speakers\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n  \u003cul class=\"a\"\u003e\n         \u003cli\u003e2.1 Channel Power with Dedicated Subwoofer OutputThis 2.1 channel audio amplifier board delivers 50W  2 for left\/right channels and 100W for a subwoofer. Powered by TPA3116D2 chips with AM interference suppression, it produces clear, dynamic sound for DIY home theater, bookshelf speakers, or car audio setups\u003c\/li\u003e\n         \u003cli\u003eSmart Control \u0026amp; Customizable SoundUse the free mobile app to rename the Bluetooth device or set a connection password. The board also features five physical knobs: master volume, independent treble \u0026amp; bass for L\/R channels, plus subwoofer volume and crossover frequency (20Hz200Hz). Fine-tune every detail to match your listening environment\u003c\/li\u003e\n         \u003cli\u003eBluetooth 5.0 + AUX Dual InputStream wirelessly via stable Bluetooth 5.0 with autoreconnect. For wired sources, use the 3.5mm AUX input. Note: Bluetooth takes priority  to use AUX mode, first disconnect any paired Bluetooth device. This design prevents accidental signal conflicts\u003c\/li\u003e\n         \u003cli\u003eDC 1224V Power Range \u0026amp; Builtin ProtectionsWorks with 12V to 24V DC adapters (5A or higher recommended). A higher voltage delivers more output power. Integrated protections include overvoltage, undervoltage, overtemperature, DC detection, and shortcircuit protection  helping safeguard your amplifier and speakers during DIY projects\u003c\/li\u003e\n         \u003cli\u003eCompact Size \u0026amp; Easy Installation Board dimensions: 120mm  100mm  20mm (4.72  3.94  0.79), weight ~256g. Each interface is clearly labeled on the board for easy wiring without constantly checking a manual. Ideal for upgrading passive speakers, building a soundbar, or adding wireless streaming to an existing audio system\u003c\/li\u003e\n  \u003c\/ul\u003e","brand":"FORIOT","offers":[{"title":"50w*2+100w AMP","offer_id":50498241298669,"sku":"B0H2F73HTD","price":159.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0324\/1050\/1164\/files\/B0H2F73HTD.jpg?v=1786956247","url":"https:\/\/leoforward.com\/products\/zk-tb21-2-1-channel-bluetooth-amplifier-board-50w-2-100w-subwoofer-app-control-treble-bass-subwoofer-freq-adjustment-tpa3116d2-dc-12-24v-bt-5-0-aux-for-diy-home-speakers-50w-2-100w-amp","provider":"LeoForward AU","version":"1.0","type":"link"}