{"type":"firestarter.listing","listing":{"id":"lst_TxYLr6Y2","product_name":"Oriolus BA300S New Version Portable Tube Headphone Amplifier","category":null,"description":"\nParameters:\n\nMachine gain: +3dB\n4.4mm input and 4.4mm output\nOutput power: 350mW(32Ω load)\nS/N: 110db\nTHD+N:0.02%\nPlayback time:7H\nFrequency range: 10Hz - 50KHz (+/-0.5dB)\nNet weight: 165g\nSize: 120 x 57 x16.5mm\nWeight:0.5kg\n\n\n\nFeatures:\n\nIt adopts two micro-tubes to amplify, current-mode operational amplifier and diffused output, and 4.4mm balanced input and output.\n\nSuperior power management ensures the performance of the whole machine.\n\nThe unit does not have volume control, and the whole machine gains +3dB, which improves the output amplitude of most front ends.\n\nThe signal is amplified by the bile duct, and the output is rich in bile, satisfying the different sound experience of the user.\nBuilt-in lithium polymer rechargeable battery, charging for 3 hours, battery life for 7 hours.\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n\n \n\n \n\n \n\n","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/oriolus-ba300s-new-version-portable-tube-headphone-amplifier-hifigo-850800.jpg?v=1721865307","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/oriolus-ba300s-new-version-portable-tube-headphone-amplifier-hifigo-212801.jpg?v=1721865355","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/oriolus-ba300s-new-version-portable-tube-headphone-amplifier-hifigo-868840.jpg?v=1721865345","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/oriolus-ba300s-new-version-portable-tube-headphone-amplifier-hifigo-734999.jpg?v=1721865332"],"price":369,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:31.618Z"},"share_url":"https://firestarter.network/l/lst_TxYLr6Y2","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_TxYLr6Y2' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Oriolus BA300S New Version Portable Tube Headphone Amplifier' and a budget_max comfortably above $369.00 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."]}}