{"type":"firestarter.listing","listing":{"id":"lst_z5_zidZ7","product_name":"SMSL A50 PRO HiFi Power Amplifier 2.1-Channel Bluetooth USB Optical HDMI AUX","category":"Speaker Amp","description":"The SMSL A50 PRO HiFi Power Amplifier is a compact and versatile 2.1-channel amplifier designed for passive speakers and passive subwoofer setups. Built with Infineon’s MA12070P amplifier chip, the A50 PRO delivers clean, efficient, and dynamic sound performance for desktop audio, TV audio, and home HiFi systems.\n \nThe A50 PRO supports multiple input options, including Bluetooth 5.0, USB, Optical, HDMI, and AUX, making it easy to connect with TVs, computers, phones, streamers, and other audio sources. Its 2.1-channel design allows users to power left and right passive speakers while also connecting a passive subwoofer for deeper bass performance.\n \nWith built-in high-pass and low-pass filters, plus adjustable passive subwoofer volume, the A50 PRO gives users more control over speaker and bass output. The included remote control makes daily operation simple and convenient. This item is in open box condition.\n \nKey Features:\n\n\nS.M.S.L A50 PRO HiFi power amplifier\n\n\n2.1-channel design for passive speakers and passive subwoofer\n\n\nInfineon MA12070P amplifier chip\n\n\nHigh-pass and low-pass filter support\n\n\nAdjustable passive subwoofer volume\n\n\nBluetooth 5.0 wireless input\n\n\nUSB, Optical, HDMI, and AUX inputs\n\n\nIncludes a remote control\n\n\nGreat for desktop audio, TV audio, and home HiFi systems\n\n","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-addsoap-speaker-amp-s-m-s-l-a50-pro-hifi-power-amplifier-2-1-channel-bluetooth-usb-optical-hdmi-aux-1241217714.jpg?v=1780400837","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-addsoap-speaker-amp-s-m-s-l-a50-pro-hifi-power-amplifier-2-1-channel-bluetooth-usb-optical-hdmi-aux-1241217713.jpg?v=1780400890","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-addsoap-speaker-amp-s-m-s-l-a50-pro-hifi-power-amplifier-2-1-channel-bluetooth-usb-optical-hdmi-aux-1241217715.jpg?v=1780400768","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-addsoap-speaker-amp-s-m-s-l-a50-pro-hifi-power-amplifier-2-1-channel-bluetooth-usb-optical-hdmi-aux-1241217712.jpg?v=1780400721"],"price":79.04,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:55.259Z"},"share_url":"https://firestarter.network/l/lst_z5_zidZ7","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_z5_zidZ7' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy SMSL A50 PRO HiFi Power Amplifier 2.1-Channel Bluetooth USB Optical HDMI AUX' and a budget_max comfortably above $79.04 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}