{"product_id":"xy-s350h-220w2-350w-bluetooth-power-amplifier-board-high-power-2-1","title":"XY-S350H 220W2+350W Bluetooth Power Amplifier Board - High Power 2.1","description":"\u003cp\u003eIn this review of the XY-S350H power amplifier board the bottom line is clear: this module is for hobbyists and DIY speaker builders who want a high-power, customizable 2.1 amplifier with strong bass and flexible inputs. The reviewer found the combination of dual TPA3251 stages, dedicated treble and bass controls, and reliable Bluetooth connectivity make it an unusually capable board for the price. It is not a plug-and-play consumer receiver but a performance-focused amplifier module for projects that can supply 18V or higher DC and appreciate adjustable tone controls.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTPA3251 HIFI CHIP:\u003c\/strong\u003e Dual TPA3251 amplifier chips deliver clear, high-current output that translates into tight midrange and powerful bass when paired with suitable speakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e The board supports an 18V to 36V input window so builders can choose supplies that balance power and efficiency for their enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e220W2+350W Output:\u003c\/strong\u003e The stated peak music power provides plenty of headroom for dynamic passages and bass impact in a 2.1 speaker setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreble \u0026amp; Bass Control:\u003c\/strong\u003e Separate high and low frequency knobs let users shape soundstage and bass slam for different music styles without needing external EQ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Protection Modes:\u003c\/strong\u003e Built-in short circuit, undervoltage, overvoltage and clipping protection help safeguard speakers and the board during real-world use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth with Custom Name:\u003c\/strong\u003e Reliable wireless pairing was reported to work better than expected, making it convenient for mobile audio sources.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe XY-S350H is best for electronics hobbyists, DIY speaker builders and home audio tinkerers who want a compact, high-power amplifier board they can mount inside a custom cabinet. It suits users who can provide a proper DC supply above 18V and who appreciate on-board tone controls and Bluetooth for convenience.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for casual buyers seeking a ready-made, wall-plug receiver with integrated display or remote control. If you need a full-featured, out-of-the-box home theater receiver with multiple HDMI inputs or automatic room calibration, look elsewhere.\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\u003eVery strong bass performance reported by customers, delivering a chest-moving low end when matched to good subwoofers.\u003c\/li\u003e\n\u003cli\u003eBluetooth connectivity is dependable and easy to pair, improving usability for mobile audio.\u003c\/li\u003e\n\u003cli\u003eAdjustable treble and bass controls give meaningful tonal shaping without extra gear.\u003c\/li\u003e\n\u003cli\u003eBuilt-in protection features increase reliability in DIY installations.\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 DC supply above 18V and some technical know-how to integrate safely into a cabinet or system.\u003c\/li\u003e\n\u003cli\u003eNot a finished consumer product-no remote, display, or advanced input switching.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eDAJUNGUO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd\u003eTPA3251 (dual)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Output (peak)\u003c\/td\u003e\n\u003ctd\u003e220W2 + 350W (2.1 configuration)\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\u003eInput Modes\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 is a strong-value amplifier module for DIYers who want serious output and tonal control without spending on a full receiver. With dual TPA3251 chips, robust protection and useful treble\/bass knobs, it offers performance close to pro-class modules if you can supply a proper DC source and do basic installation work.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill the amplifier start with a 12V supply?\u003c\/strong\u003e\u003cbr\u003eThe board requires a working voltage above 18V and will not power up reliably with 12V.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use a standard 5.5mm x 2.1mm DC adapter?\u003c\/strong\u003e\u003cbr\u003eYes; most market DC adapters with a 5.5mm x 2.1mm plug are compatible, or you can wire the positive and negative directly to the power terminals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the board protect against speaker faults?\u003c\/strong\u003e\u003cbr\u003eYes; it includes short circuit, undervoltage, overvoltage and clipping protection to help protect the board and connected speakers.\u003c\/p\u003e","brand":"DAJUNGUO","offers":[{"title":"Default Title","offer_id":46759762133211,"sku":"B0B42124CB","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71VHqwbDmfL._SL1500_275adc51-6e32-4925-bd21-abad9ffe9d02.jpg?v=1747854757","url":"https:\/\/gearmusthave.com\/products\/xy-s350h-220w2-350w-bluetooth-power-amplifier-board-high-power-2-1","provider":"GearMustHave","version":"1.0","type":"link"}