{"product_id":"xy-s350h-2-1-channel-bluetooth-power-amplifier-board-powerful","title":"XY-S350H 2.1 Channel Bluetooth Power Amplifier Board - Powerful","description":"\u003cp\u003eIn this review the XY-S350H 2.1 Channel Bluetooth Power Amplifier Board is evaluated for hobbyists and builders who want a compact, high-power module with tone controls and modern connectivity. The board's single biggest reason to buy is raw output capability driven by two \u003cstrong\u003eTPA3251\u003c\/strong\u003e chips, delivering a notably loud and clean signal when fed with the recommended DC input. For DIY speaker builders and small home theater upgrades this board brings amplifier headroom and useful adjustments without a bulky chassis.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTPA3251 HIFI CHIP:\u003c\/strong\u003e Two TPA3251 power amplifier chips provide high output potential and efficient amplification for dynamic playback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Input:\u003c\/strong\u003e The board accepts DC 18V to 36V so it can run from a range of common adapters and power supplies for flexible installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTone Controls:\u003c\/strong\u003e Separate treble and bass knobs let the user shape low and high frequencies for more layered sound and stronger bass impact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Functions:\u003c\/strong\u003e Built-in protections including short circuit, undervoltage, overvoltage and clipping protection help safeguard speakers and the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Inputs:\u003c\/strong\u003e AUX, Bluetooth and USB input options make it easy to connect phones, players or line sources without extra converters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Standard 5.5mm x 2.1mm DC plugs and direct wire hookup are supported to fit typical power arrangements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe XY-S350H is best for DIY audio enthusiasts, small studio owners and home theater tinkerers who need a compact amplifier board with high output and tone shaping. It suits projects where installing a full-size amp is impractical but significant loudness and bass control are required.\u003c\/p\u003e\n\u003cp\u003eIt is less suited for those seeking a finished, rack-ready amplifier with a built-in power supply and case, or buyers who prioritize fully balanced inputs or audiophile-grade discrete circuitry over power density. If you need plug-and-play furniture-friendly equipment, consider a prebuilt integrated amp 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\u003eHigh power output capability from dual TPA3251 chips gives strong volume and headroom.\u003c\/li\u003e\n\u003cli\u003eTreble and bass controls provide useful tone shaping for different music styles.\u003c\/li\u003e\n\u003cli\u003eWide DC input range and standard DC jack compatibility simplify power sourcing.\u003c\/li\u003e\n\u003cli\u003eProtection features add confidence during long runs and varied loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSound quality reports are mixed among users, with some variation in perceived bass and tonal balance.\u003c\/li\u003e\n\u003cli\u003eThe module is not a finished enclosure product, so additional mounting and cooling considerations are required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eXY-S350H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd\u003eTPA3251 (two chips)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003eUp to 220W2 + 350W (PMPO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Voltage\u003c\/td\u003e\n\u003ctd\u003eDC 18V - 36V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eAUX, Bluetooth, USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eShort circuit, undervoltage, overvoltage, clipping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe XY-S350H 2.1 Channel board is a strong option for builders who want substantial output and flexible tone controls in a compact package; it delivers good value when paired with an appropriate DC supply and proper cooling. For those who need a finished consumer amplifier or absolute consistency in tonal character, a boxed integrated amp may be a better fit, but for DIY projects this module balances power, features and protections well.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this board run on common DC adapters?\u003c\/strong\u003e\u003cbr\u003eYes, it accepts the common 5.5mm x 2.1mm DC plug and supports DC 18V to 36V input, or direct wire to the power terminals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include protection circuits?\u003c\/strong\u003e\u003cbr\u003eYes, the module includes short circuit, undervoltage, overvoltage and clipping protection to help prevent damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work with passive subwoofers and satellite speakers?\u003c\/strong\u003e\u003cbr\u003eYes, the 2.1 configuration and separate bass control make it suitable for driving passive satellite speakers plus a passive subwoofer, provided the speaker ratings match the amplifier power and you use appropriate crossovers.\u003c\/p\u003e","brand":"AUGUESLD","offers":[{"title":"Default Title","offer_id":46759390576859,"sku":"B0B24FP8SW","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71VHqwbDmfL._SL1500.jpg?v=1747854729","url":"https:\/\/gearmusthave.com\/products\/xy-s350h-2-1-channel-bluetooth-power-amplifier-board-powerful","provider":"GearMustHave","version":"1.0","type":"link"}