{"product_id":"2-1-channel-power-amplifier-board-20w-compact-bluetooth-5-0-module","title":"2.1 Channel Power Amplifier Board 20W - Compact Bluetooth 5.0 Module","description":"\u003cp\u003eOur review of the 2.1 Channel Power Amplifier Board finds it best suited to hobbyists and DIY audio builders who need a compact, Bluetooth 5.0 driven amp module for small home theater or active speaker projects. The single biggest reason to buy is the configurable 20W maximum output (Bass 10W + sub-box 10W split as 5W x 2) delivered from a 5V supply, which lets builders add Bluetooth streaming to compact speaker enclosures without a bulky external amplifier. It is straightforward to integrate but demands careful matching of power supply and speaker choices.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth 5.0:\u003c\/strong\u003e Reliable wireless input that supports phones, MP3 players, and computers for modern streaming convenience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigurable 20W maximum power:\u003c\/strong\u003e Offers a combined Bass 10W and sub-box 10W output useful for small active speaker setups when paired with suitable drivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow voltage operation:\u003c\/strong\u003e Runs from a single DC 5V source (4.8-5V) so it can be powered from common USB power supplies or small 5V adapters with sufficient current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact module:\u003c\/strong\u003e Small, lightweight board that is easy to mount inside hobby enclosures or retrofit into existing speaker boxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple wiring:\u003c\/strong\u003e Ships with three connection cables to get audio and power hooked up quickly during prototyping and installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis board is well suited for makers building compact active speakers, desktop subwoofer add-ons, or small home theater projects where space is limited and Bluetooth streaming is desirable. Its 5V operation and light weight make it a practical choice for battery-powered or USB-powered experiments when the correct current supply is provided.\u003c\/p\u003e\n\u003cp\u003eIt is not ideal for large rooms or high-SPL systems; anyone seeking high-power PA output or heavy low-frequency extension should look for a higher-voltage amplifier and larger woofers. Also, users who cannot meet the recommended 2.5A-3A power input or who expect to drive 6-8W woofers reliably should consider different modules or dedicated amplifiers.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompact Bluetooth 5.0 module lets users add wireless playback without complex source gear.\u003c\/li\u003e\n\u003cli\u003eConfigurable 20W peak output provides clear dynamics for small room listening when matched to proper drivers.\u003c\/li\u003e\n\u003cli\u003eRuns from a single 5V supply, making integration with USB power banks and modern adapters easy if current is sufficient.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStrict requirements on power supply and speaker selection mean it can be unforgiving if paired with undersized or mismatched woofers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003e5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003eDC 5V (4.8-5V), 2.5A-3A recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum power\u003c\/td\u003e\n\u003ctd\u003e20W (Bass 10W + sub-box 10W \/ 5W x 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage weight\u003c\/td\u003e\n\u003ctd\u003eApprox. 29g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\u003ctd\u003e1 module, 3 connection cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 2.1 Channel Power Amplifier Board is a compact, cost-effective way to add \u003cstrong\u003eBluetooth\u003c\/strong\u003e streaming and modest amplification to small speaker projects, provided you pair it with the correct 4-5W satellite drivers and a reliable 2.5A-3A 5V supply. For DIYers and hobbyists building desktop or small-room systems it offers good value and flexibility; for users needing louder, deep-bass performance, a higher-voltage amplifier and larger woofers are a better choice.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this board run from a USB power bank?\u003c\/strong\u003e\u003cbr\u003eYes, it can run from USB power if the bank can supply 2.5A-3A at 5V; lower-current banks may cause reduced output or instability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat speaker sizes should be used?\u003c\/strong\u003e\u003cbr\u003eUse 4-5W full-range satellites for left and right and a 10W-15W woofer for bass; avoid 6W or 8W woofers as recommended for stable operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat audio sources are supported?\u003c\/strong\u003e\u003cbr\u003eThe board accepts Bluetooth streaming and wired inputs from MP3 players, phones, computers, and other common devices.\u003c\/p\u003e","brand":"Tangxi","offers":[{"title":"Default Title","offer_id":46770093392091,"sku":"B07RWYM7V7","price":12.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61jk5M2KttL._AC_SL1001.jpg?v=1747854805","url":"https:\/\/gearmusthave.com\/products\/2-1-channel-power-amplifier-board-20w-compact-bluetooth-5-0-module","provider":"GearMustHave","version":"1.0","type":"link"}