{"product_id":"a816-dual-chip-acm8816-high-power-gan-digital-bluetooth-amplifier-board-audiophile-grade-remote-controlled-decoding-amplifier-300w-300w-on-48v-dc","title":"A816 Dual-Chip ACM8816 High-Power GaN Digital Bluetooth Amplifier Board – Audiophile-Grade Remote-Controlled Decoding Amplifier 300w+300w on 48V DC","description":"\u003cp\u003eInstructions for Use\u003cbr\u003eSpeaker Compatibility: The output of the amplifier board can only be connected to passive speakers. Do not connect it to active speakers or constant-voltage speakers.\u003c\/p\u003e\n\u003cp\u003ePower Supply Requirements: The amplifier board operates on a DC 24V–48V power supply. Higher voltage results in higher output power, but the voltage must not exceed 48V, otherwise, the amplifier will burn out. The required power plug size is 5.5 × 2.5 mm, with a center-positive and outer-negative polarity.\u003c\/p\u003e\n\u003cp\u003eOperation \u0026amp; Controls:\u003c\/p\u003e\n\u003cp\u003ePowering On: When connected to power for the first time, the screen will light up and the device will turn on automatically.\u003c\/p\u003e\n\u003cp\u003eVolume \u0026amp; Input: Turn the encoder knob directly to adjust the volume. Short-press the knob to switch between input sources (alternatively, using the remote control is more convenient).\u003c\/p\u003e\n\u003cp\u003eButtons: Short-press the left button to mute. Long-press the left button to enter standby mode, and long-press it again to power the device back on.\u003c\/p\u003e\n\u003cp\u003eWiring Warning: The negative terminals (-) of the left and right audio output channels must not be connected together, otherwise, it will cause the amplifier to burn out.\u003c\/p\u003e\n\u003cp\u003eBluetooth Mode: To use Bluetooth, switch the input source to USB\/BT. Search for the Bluetooth device named \"YJCO-QCC3084\" on your phone and connect to play audio.\u003c\/p\u003e\n\u003cp\u003eUSB Audio Mode: * To use USB playback, switch the input source to USB\/BT mode.\u003c\/p\u003e\n\u003cp\u003eThe USB input can be connected directly to a computer or a smartphone for plug-and-play audio (no driver installation needed).\u003c\/p\u003e\n\u003cp\u003eWhen connecting a phone via OTG, you must use a proper OTG cable; a standard charging cable will not work.\u003c\/p\u003e\n\u003cp\u003eNote: This USB port cannot read USB flash drives (U-disks) directly.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/8726\/6678\/files\/WhatsApp_Image_2026-06-22_at_6.44.59_PM.jpg?v=1782134721\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/8726\/6678\/files\/WhatsApp_Image_2026-06-22_at_6.51.44_PM.jpg?v=1782134721\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Inkocean Technologies","offers":[{"title":"Default Title","offer_id":47908728602854,"sku":"IOT-A816","price":7999.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/8726\/6678\/files\/WhatsAppImage2026-06-22at6.45.50PM.jpg?v=1782134703","url":"https:\/\/inkocean.in\/products\/a816-dual-chip-acm8816-high-power-gan-digital-bluetooth-amplifier-board-audiophile-grade-remote-controlled-decoding-amplifier-300w-300w-on-48v-dc","provider":"Inkocean Technologies","version":"1.0","type":"link"}