{"product_id":"xh-a158-bluetooth-5-0-pam8403-5w-x2-amplifier-board-dc5v-wireless-stereo","title":"XH-A158 Bluetooth 5.0 Amplifier Board — PAM8403 5W×2, DC 5V, Wireless Stereo Speaker","description":"\u003ch2\u003eXH-A158 Bluetooth 5.0 Amplifier Board — PAM8403 5W×2, DC 5V, Wireless Stereo\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eXH-A158\u003c\/strong\u003e combines a Bluetooth 5.0 receiver with a PAM8403 Class D stereo amplifier on a single compact board — providing a complete wireless audio solution that drives two 4Ω or 8Ω speakers at up to 5W per channel from a 5V USB power supply. No audio cables needed: pair your phone or tablet via Bluetooth and connect speakers directly to the board terminals. Ideal for DIY Bluetooth speaker builds, audio upgrade projects, and portable speaker enclosures.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth Version:\u003c\/strong\u003e 5.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmplifier IC:\u003c\/strong\u003e PAM8403 (Class D)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 5W × 2 channels (stereo)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeaker Impedance:\u003c\/strong\u003e 4Ω or 8Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e DC 5V (USB power bank or USB adapter)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth Range:\u003c\/strong\u003e Up to 10m (line of sight)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio Codec:\u003c\/strong\u003e SBC (standard Bluetooth audio)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e \u0026gt;80dB (PAM8403)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTHD:\u003c\/strong\u003e \u0026lt;0.1% at 1W output\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePAM8403 Class D vs Class AB Amplifier\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePAM8403 Class D (this board):\u003c\/strong\u003e ~90% efficiency, minimal heat, runs from 5V USB — for portable battery-powered speakers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass AB (e.g., LM386):\u003c\/strong\u003e ~50% efficiency, more heat, better audio quality at low power — for mains-powered audio\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDIY Bluetooth speaker enclosure build\u003c\/li\u003e\n  \u003cli\u003eWireless audio upgrade for existing speaker cabinet\u003c\/li\u003e\n  \u003cli\u003ePortable USB-powered Bluetooth speaker\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi \/ Arduino audio output with Bluetooth input\u003c\/li\u003e\n  \u003cli\u003eDesktop computer wireless speaker system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eXH-A158 Bluetooth 5.0 amplifier board — PAM8403 5W×2, DC 5V, 10m range for DIY wireless Bluetooth speaker and portable audio amplifier projects.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991458664683,"sku":"\u003cnone\u003e","price":7.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/xh-a158-bluetooth-5-0-pam8403-5w2-mini-wireless-amplifier-board.webp?v=1761795374","url":"https:\/\/keszoox.com\/products\/xh-a158-bluetooth-5-0-pam8403-5w-x2-amplifier-board-dc5v-wireless-stereo","provider":"Keszoox","version":"1.0","type":"link"}