{"type":"firestarter.listing","listing":{"id":"lst_Y5SPSR_p","product_name":"SMSL Upgraded M300SE HiFi DAC Headphone Amplifier Open Box","category":"Headphone DAC/Amp","description":"The SMSL Upgraded M300SE HiFi Headphone Amplifier is a compact desktop DAC and headphone amplifier designed for high-resolution music playback, headphone listening, and HiFi audio systems. Built with 2 x CS43131 DAC chips and XMOS USB processing, the M300SE delivers clean, detailed sound with low distortion and strong decoding capability\nThe M300SE supports DSD, MQA decoding, and multiple digital input options, including USB, Optical, Coaxial, and Bluetooth, making it easy to connect with computers, TVs, streamers, CD players, and other audio sources. It also features balanced XLR output, allowing it to work as a DAC for powered speakers, amplifiers, and more advanced audio setups.\nWith a low THD+N of 0.00013% and an included remote control, the M300SE is a practical choice for users who want a small but versatile DAC/headphone amplifier for desktop and home HiFi use. This item is in open box condition.\nKey Features:\n\n\nSMSL Upgraded M300SE HiFi DAC and headphone amplifier\n\n\nBuilt with 2 x CS43131 DAC chips\n\n\nXMOS USB audio processing\n\n\nSupports DSD and MQA decoding\n\n\nUSB, Optical, Coaxial, and Bluetooth inputs\n\n\nBalanced XLR output\n\n\nLow THD+N: 0.00013%\n\n\nIncludes a remote control\n\n\nGreat for desktop HiFi and headphone listening\n \n\n","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/id2a8704.jpg?v=1781600807","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/id2a8707.jpg?v=1781600807","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/id2a8708.jpg?v=1781600805"],"price":107.94,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:55.024Z"},"share_url":"https://firestarter.network/l/lst_Y5SPSR_p","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_Y5SPSR_p' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy SMSL Upgraded M300SE HiFi DAC Headphone Amplifier Open Box' and a budget_max comfortably above $107.94 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."]}}