{"product_id":"2-x-5w-bluetooth-amplifier-board-3-7v-5v-compact-audio-module","title":"2 x 5W Bluetooth Amplifier Board 3.7V-5V - Compact Audio Module","description":"\u003cp\u003eIn this review the 2 x 5W Amplifier Board is presented as a compact, low-voltage audio module aimed at DIY audio builders and small portable speaker projects. The single biggest reason to consider it is the combination of Bluetooth 5.0 connectivity and a configurable 10W total output on a small PCB that runs from a single lithium cell or 5V supply. For makers who need hands-free calling, external buttons and the option to drive two 4 ohm satellite speakers directly, this board offers clear practical value without the bulk of a full amplifier enclosure.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth 5.0:\u003c\/strong\u003e Provides a stable wireless input and low-latency connection for phones and tablets, making pairing and streaming straightforward.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 5W channels:\u003c\/strong\u003e The board is set up for stereo output with a maximum configurable power of 10W total, suitable for small left and right satellite speakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-voltage operation:\u003c\/strong\u003e Runs from DC 3.7V to 5V so it can be powered by a single lithium battery or a 5V supply for portable use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHands-free calling:\u003c\/strong\u003e Integrated call handling lets the module act as a speakerphone when paired to a mobile device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging and power control:\u003c\/strong\u003e USB is used as the charging input for the lithium battery and the board includes a micro power switch and charge indicator light for convenience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal amplifier output:\u003c\/strong\u003e An OUT audio terminal allows feeding a separate power amplifier if more drive is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe amplifier board is best for hobbyists, makers and small-scale installers who need a compact \u003cstrong\u003eBluetooth amplifier\u003c\/strong\u003e that can run from a single-cell 3.7V lithium battery or a 5V supply. It is suited to DIY portable speaker builds, desktop audio add-ons, and projects where hands-free calling and simple external button control are required.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for high-power home theater use or large loudspeakers that need sustained high current. Buyers who require built-in power supplies, enclosures or guaranteed high-current delivery beyond 1.5A to 2A should look for a dedicated amp or powered speaker solution instead.\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 PCB design with both Bluetooth 5.0 and AUX input for flexible sourcing of audio.\u003c\/li\u003e\n\u003cli\u003eConfigurable total output to 10W (5W per channel) suits small stereo satellite speakers.\u003c\/li\u003e\n\u003cli\u003eIntegrated charging input and indicator plus hands-free calling functionality add convenience for portable builds.\u003c\/li\u003e\n\u003cli\u003eExternal OUT terminal enables use with a larger power amplifier if more output is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires a reliable 1.5A-2A power source; weaker batteries can cause restarts or distortion.\u003c\/li\u003e\n\u003cli\u003eNo enclosure or heatsinking included, so thermal management is the responsibility of the builder.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMugast\u003c\/td\u003e\n\u003c\/tr\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\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003eDC 3.7V-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003ctd\u003e1.5A-2A recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e2 x 5W (configurable to 10W total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCBA size\u003c\/td\u003e\n\u003ctd\u003eapprox. 40 x 34 x 9mm (including terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage weight\u003c\/td\u003e\n\u003ctd\u003eapprox. 40 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor DIY builders who need a compact \u003cstrong\u003eBluetooth amplifier board\u003c\/strong\u003e that runs from a single-cell battery or a 5V supply, this module is a practical and cost-effective choice. It combines Bluetooth 5.0, hands-free calling and configurable stereo output, but requires a stable 1.5A-2A power source and some attention to thermal and enclosure design to avoid restart or distortion under load.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this board be powered by a single 3.7V lithium battery?\u003c\/strong\u003e\u003cbr\u003eYes, it supports DC 3.7V operation, but the battery must be able to supply 1.5A-2A continuous current to avoid instability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the board include a charging circuit?\u003c\/strong\u003e\u003cbr\u003eYes, USB serves as the charging input for the lithium battery and a red indicator light shows charging status.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I drive larger speakers by using the OUT terminal?\u003c\/strong\u003e\u003cbr\u003eThe OUT audio terminal allows feeding an external power amplifier, but the onboard output is best suited for small 4 ohm satellite speakers.\u003c\/p\u003e","brand":"Mugast","offers":[{"title":"Default Title","offer_id":46770021466331,"sku":"B07RJF2MYC","price":8.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61Jx4ncp2yL._AC_SL1001_e316052e-8655-4ba5-a909-1052ad369835.jpg?v=1747854801","url":"https:\/\/gearmusthave.com\/products\/2-x-5w-bluetooth-amplifier-board-3-7v-5v-compact-audio-module","provider":"GearMustHave","version":"1.0","type":"link"}