{"product_id":"hw-433-dual-5w-digital-bluetooth-stereo-amplifier-board-compact","title":"HW 433 Dual 5W Digital Bluetooth Stereo Amplifier Board - Compact","description":"\u003cp\u003eIn this review the HW 433 Dual 5W Digital Bluetooth Stereo Amplifier Board is evaluated for hobbyists and small audio projects seeking a compact, user-friendly power module. The bottom line is that this Class D amplifier module delivers reliable stereo output and protective features in a small package, making it a strong choice for DIY desktop speakers, portable enclosures, and basic home audio experiments. It stands out for easy installation and built-in safeguards, which together simplify integration and reduce risk when powering modest speaker loads.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 5W Output:\u003c\/strong\u003e Provides two channels at up to 5W each, suitable for small stereo speakers and near-field listening projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth Connectivity:\u003c\/strong\u003e Built-in Bluetooth with a practical transmission range up to 20m\/65.6ft lets the module stream audio wirelessly without a direct line connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact 5V Power:\u003c\/strong\u003e Runs from a single 5V micro USB supply or one 18650 battery (battery not included), simplifying portable and low-voltage setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Protection:\u003c\/strong\u003e Integrated short-circuit, over-temperature and overload protection helps prevent damage during installation and switching events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Class D Design:\u003c\/strong\u003e High-quality materials and a digital amplifier chipset deliver efficient power conversion with reduced heat and long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser-Friendly Installation:\u003c\/strong\u003e Exact cutouts and clear interfaces make mounting and wiring straightforward for makers and installers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe HW 433 module is best for electronics hobbyists, DIY speaker builders, and small-project integrators who need a compact stereo amplifier with Bluetooth and safety protections. It is especially useful when a 5V power option or single-cell battery operation is desirable for portability or compact enclosures.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for those who need high power home theater amplification or professional-grade audio fidelity for large rooms; buyers seeking much higher output or advanced audio tuning should consider larger amplifier boards or dedicated receiver equipment.\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 Class D design gives efficient stereo output with low heat and reliable materials.\u003c\/li\u003e\n\u003cli\u003eBluetooth range up to about 20m\/65.6ft provides flexible wireless placement for casual listening.\u003c\/li\u003e\n\u003cli\u003eBuilt-in protections for short circuit, over-temperature and overload reduce risk during use and installation.\u003c\/li\u003e\n\u003cli\u003eSimple 5V operation and clear interfaces make it beginner-friendly for DIY builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum power of 5W per channel limits use to small speakers and near-field listening scenarios.\u003c\/li\u003e\n\u003cli\u003eBattery operation requires a single 18650 cell which is sold separately and adds complexity for portable setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePower Amplifier Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003ePAM8403\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power\u003c\/td\u003e\n\u003ctd\u003e5W + 5W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (micro USB \/ single 18650 battery)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth Range\u003c\/td\u003e\n\u003ctd\u003eUp to 20m\/65.6ft (no blocking)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Includes\u003c\/td\u003e\n\u003ctd\u003e1 x Power Amplifier Module, 2 x Cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe HW 433 Dual 5W Bluetooth Class D amplifier board is a practical, value-minded pick for DIYers and small audio projects that need compact stereo amplification with wireless convenience and built-in protection. It is inexpensive, easy to install, and durable, so it represents good value for anyone building portable speakers or desktop audio solutions that do not require high power.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module run from a battery?\u003c\/strong\u003e\u003cbr\u003eYes, it supports a single 18650 battery as an alternative power source, though the battery is not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power supply is required?\u003c\/strong\u003e\u003cbr\u003eThe board runs from a 5V supply via micro USB or one 18650 cell, making it compatible with common USB power sources.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe to use without extra cooling?\u003c\/strong\u003e\u003cbr\u003eIts Class D efficiency reduces heat and the board includes over-temperature protection, but adequate ventilation is still recommended for prolonged use.\u003c\/p\u003e","brand":"Leapiture","offers":[{"title":"Default Title","offer_id":46754816458971,"sku":"B0CPSMTPX9","price":12.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61dDmIthD8L._AC_SL1001.jpg?v=1747854400","url":"https:\/\/gearmusthave.com\/products\/hw-433-dual-5w-digital-bluetooth-stereo-amplifier-board-compact","provider":"GearMustHave","version":"1.0","type":"link"}