{"type":"firestarter.listing","listing":{"id":"lst_ycTPAafk","product_name":"FiiO FH3 HiFi Earphones","category":"Earphone / In-Ear Monitor (IEM)","description":"FH3 Aluminum-Magnesium Earphones\nThe FH3 is a compact hybrid earphone that blends precision engineering, thoughtful ergonomics, and a driver system built for clarity from bass through treble. Its aluminum-magnesium alloy shell sits lightly on the ear, the beryllium-plated diaphragm delivers fast low-end punch, and the dual Knowles drivers add texture and detail through the mids and highs. Paired with a high-purity monocrystalline silver-plated cable, the FH3 offers a listening companion that feels consistent, comfortable, and easy to live with.\n\naerospace-grade shell that feels good hour after hour\n\nThe FH3 uses an aluminum-magnesium alloy shell carved with 5-axis CNC machining. This gives the housings a smooth contour and a precise fit, so they rest naturally against the ear. The machining tolerances help the shells maintain rigidity, reducing stray vibrations that can cloud fine detail. Whether you’re working, walking, or listening late into the night, the shells stay stable and unobtrusive.\n\na hybrid driver system that handles every frequency\n\nInside each earpiece is a 10mm beryllium-plated diaphragm dynamic driver partnered with two Knowles balanced-armature units. The dynamic driver handles the lows with its rigid yet lightweight diaphragm, producing quick, controlled bass. The ED-30262 midrange driver adds fullness and body to vocals, while the RAD-33518 treble driver provides clarity in the upper registers. The physical-plus-electronic crossover guides these drivers so they work as a single system.\n\na turbo acoustic design for smoother bass\n\nFiiO’s S.TURBO architecture uses a longer, turbine-inspired sound tube to filter unwanted upper frequencies from the dynamic driver. The result is more focused low-end energy. You hear clean bass lines that sit in their own space without masking mids or highs. The tube length—41.5mm—helps maintain a gentle rolloff around 32dB for a natural transition into the midrange.\n\nbalanced pressure relief for relaxed listening\n\nA pa","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623981.jpg?v=1764627999","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623987.jpg?v=1764628014","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623989.jpg?v=1764628008","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623988.jpg?v=1764628012","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623986.jpg?v=1764628002","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623985.jpg?v=1764627887","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623982.jpg?v=1764627877","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623984.jpg?v=1764627881","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-fiio-fh3-hifi-earphones-3-drivers-1209623983.jpg?v=1764627883"],"price":119.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:56.821Z"},"share_url":"https://firestarter.network/l/lst_ycTPAafk","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_ycTPAafk' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy FiiO FH3 HiFi Earphones' and a budget_max comfortably above $119.99 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."]}}