{"type":"firestarter.listing","listing":{"id":"lst_zCYJV6bP","product_name":"KEFINE Quatio 2DD +2BA Hybrid Drivers IEMs","category":"Earphone","description":"\n*The curve is measured by a third party and is for reference only.\nFeatures:-\n>Kefine’s First Take on Hybrid IEMs.\n>2DD+2BA Hybrid IEMs.\n>Warm, Lush, Musical Sound response.\n>Physical+Electronic Dual-Way Frequency Crossover.\n>Adjustable Tuning With Replaceable Nozzles.\n>Three Sets of Nozzles Included in the Package.\n>CNC-Machined Aluminium Alloy Ear Cavities.\n>High-Purity Silver-Plated Copper Cable.\n>Modular Plug System(3.5mm+4.4mm).\n>Comes with a Variety of Ear tips.\nTechnical Information:-\n>Impedance: 32Ω.\n>Sensitivity: 107dB±3dB.\n>Frequency Response Range: 20Hz~20kHz.\n>Connector Type: 0.78mm 2-Pin Connectors.\nKefine welcomes its first hybrid IEM for the audiophiles, introducing the Kefine Quatio. It’s a quad-driver hybrid set of in-ear monitors that houses a dual dynamic driver setup combined with a dual balanced armature driver setup to deliver a warm, lush, musical sound response. Kefine has equipped the pair with a three-way frequency crossover featuring physical and electronic crossover designs. It comes with three sets of replaceable nozzles, each having a unique sound profile. The pair features high-quality CNC-machined aluminium alloy ear cavities. Kefine bundles the Quatio with a variety of ear tips and a premium stock cable. The cable is a high-purity silver-plated copper cable with modular termination plugs featuring 3.5mm and 4.4mm plugs in the package. Enter into a new level of sonic excellence with Kefine’s latest creation!!\nQuad-Driver Hybrid Architecture:-\nKefine Quatio is Kefine’s first foray into the world of Hybrid Driver IEMs. So far, Kefine has developed many successful single-driver IEMs like the Kefine Klean, Kefine Klanar, Kefine Delci, etc. The Quatio is a quad-driver hybrid IEM featuring a 2DD+2BA driver setup. The pair houses a 10mm and an 8mm dynamic driver unit, which are combined with a dual balanced armature driver setup to produce a true high-fidelity sonic experience for the users.\nPrecise","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-iems-earphone-hifigo-kefine-quatio-950274.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-279628.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-505159.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-282785.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-624070.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-iems-earphone-hifigo-868480.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-685855.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-iems-earphone-hifigo-855353.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-184155.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-546649.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-242643.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-218044.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-934835.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-827558.jpg?v=1761620071","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/kefine-quatio-2dd-2ba-hybrid-drivers-iems-earphone-hifigo-597883.jpg?v=1761620071"],"price":129.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:28.898Z"},"share_url":"https://firestarter.network/l/lst_zCYJV6bP","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 ","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_zCYJV6bP' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy KEFINE Quatio 2DD +2BA Hybrid Drivers IEMs' and a budget_max comfortably above $129.99 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."]}}