{"type":"firestarter.listing","listing":{"id":"lst_cJns2rpp","product_name":"Fidue SIRIUS A91 4BA+1DD IEMs","category":"Earphone","description":"\n\t\nFunction: For Mobile Phone\n\n\t\nFunction: Monitor Headphone\n\n\t\nFunction: Sport\n\n\t\nFunction: For Routine Office Work\n\n\t\nFunction: Common Headphone\n\n\t\nFunction: for Video Game\n\n\t\nFunction: Noise Cancelling\n\n\t\nFunction: Wireless Headphone\n\n\t\nFunction: PORTABLE\n\n\t\nFunction: HiFi Headphone\n\n\t\nFunction: For iPod\n\n\t\nSupport APP: No\n\n\t\nTime to market: 2016\n\n\t\nActive Noise-Cancellation: No\n\n\t\nConnectors: 3.5mm\n\n\t\nSupport Apt-x: No\n\n\t\nResistance: 20Ω\n\n\t\nSupport Memory Card: No\n\n\t\nSensitivity: 113dB\n\n\t\nVocalism Principle: Hybrid technology\n\n\t\nWith Microphone: No\n\n\t\nFrequency Response Range: 5-40000Hz\n\n\t\nControl Button: No\n\n\t\nLine Length: 1.25m\n\n\t\nStyle: In-Ear\n\n\t\nPlug Type: Line Type\n\n\t\nIs wireless: No\n\n\t\nBrand Name: Fidue\n\n\t\nWireless Type: None\n\n\t\nVolume Control: No\n\n\t\nWaterproof: No\n\n\t\nModel Number: SIRIUS\n\n\t\nCommunication: Wired\n\n\t\ncompatible platform: Windows Phone iOS ANDROID\n\n\t\nsensitivity: 113dB/mW\n\n\t\nimpedance: 20.\n\n\t\nmodel: SIRIUS\n\n\t\ncable length: 1.3 meters\n\n\t\nUse: Portable Media Player\n\n\t\nPackage: Yes\n\n\t\nWith Microphone: No\n\n\t\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\n\n\n\n\n\n \n\n \n\n---SpecificationsSplit---\n\n5-way Hybrid Driving Technology\nCustomization-Class integration of Dynamic Driver \n \n4 Customization-Class Hi-End Balanced Armature Driver\n The high-definition resolution power shows you lively instruments and voices.\n \n1 Customized Bass Dynamic Driver\n Surpass the conventional bass diving ability.\nMake music full and extend, grand and magnificent.\n \nDelicate 3D Acoustic Cavity Coil Design\n Create suitable voice space for the voice attributes of every unit by means of delicate 3D analysis technics\n \nDelicate Full-Frequency Fractional Frequency Tuning\n Make 5 high-quality drivers with different attributes combine perfectly.\n \nLower Internal Resistance 8 Cores Silver Plating Balance Cable\n Compared with most earphones with 4 cores or 3 cores wire rod, it doubles the wire rod. As great reduction of the internal resistance of wire rod, the signal becomes more clear and prompt.\n \nOrigi","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/products/fidue-sirius-a91-audiophile-iems-reference-class-4badynamic-circle-moving-iron-hifi-earphone-earpiece-earphone-hifigo-227535.jpg?v=1648912631","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/fidue-sirius-a91-audiophile-iems-reference-class-4badynamic-circle-moving-iron-hifi-earphone-earpiece-hifigo-500935.jpg?v=1648113918","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/fidue-sirius-a91-audiophile-iems-reference-class-4badynamic-circle-moving-iron-hifi-earphone-earpiece-hifigo-794299.jpg?v=1648113918","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/fidue-sirius-a91-audiophile-iems-reference-class-4badynamic-circle-moving-iron-hifi-earphone-earpiece-hifigo-488078.jpg?v=1648113918","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/fidue-sirius-a91-audiophile-iems-reference-class-4badynamic-circle-moving-iron-hifi-earphone-earpiece-hifigo-902300.jpg?v=1573285072","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/fidue-sirius-a91-audiophile-iems-reference-class-4badynamic-circle-moving-iron-hifi-earphone-earpiece-hifigo-850107.jpg?v=1573285072"],"price":899,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:30.962Z"},"share_url":"https://firestarter.network/l/lst_cJns2rpp","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_cJns2rpp' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Fidue SIRIUS A91 4BA+1DD IEMs' and a budget_max comfortably above $899.00 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."]}}