{"type":"firestarter.listing","listing":{"id":"lst_1U2dlovx","product_name":"Kefine Quatio","category":"In-Ear Monitors","description":"\n\n\nHybrid 2DD + 2BA Driver Configuration\nKEFINE Quatio combines two dynamic drivers with two balanced armature drivers in each earpiece, delivering a warm, lush, and musical presentation. The exclusive 10 mm DLC diaphragm driver handles the full frequency range with high-resolution clarity, while the 8 mm PU + LCP diaphragm driver strengthens bass impact for a fuller low end. The dual balanced armatures kick in above 5 kHz to extend treble smoothly and reveal fine detail and spacious imaging.\n\n\nAccurate Sound Control\nBy directing bass, mids, and highs through separate acoustic tubes—10 mm dynamic, 8 mm dynamic, and BA units—Quatio achieves precise frequency division. This hybrid approach, paired with electronic crossover tuning, ensures punchy lows, warm and lush mids, and smooth, non-harsh highs for a balanced overall signature.\n\n\n\nCustom Stainless-Steel Tuning Nozzles\nQuatio ships with three pairs of threaded stainless-steel nozzles to suit different tastes:Silver: neutral balanceGold: transparent clarityBlack: warm emphasisEasy to swap, these nozzles let you tailor the tonal balance, prevent tube blockages, and extend the product’s lifespan.\n\n\nPrecision CNC-Machined Housing\nEach Quatio shell is crafted from aviation-grade aluminum via five-axis CNC machining (30+ minutes per pair, ±0.01 mm tolerance). The polished, anodized metal casing is slim (0.06 mm wall thickness) for a lightweight, comfortable fit, while offering excellent durability and a premium texture.\n\n\n\nModular Plug System\nTwo interchangeable plugs—3.5 mm single-ended and 4.4 mm balanced—ensure broad compatibility, from professional audio players to smartphones and laptops, without adapters.\n\n\nHigh-Purity Silver-Plated Braided Cable\nThe included 4-strand, silver-plated oxygen-free copper cable (98 strands per core, 392 total) provides lossless signal transfer. Copper warmth merges with silver’s extended highs, yielding a full, detailed sound.\n\n\n\nDetachable 0.78 mm 2-Pin Cable\nQuatio’s standard 0.78 mm","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_01.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_02.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_03.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_04.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_09.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_08.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_14.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_15.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_16.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_17.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_05.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_13.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_06.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_07.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_11.jpg?v=1749798010","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kefine_Quatio_12.jpg?v=1749798010"],"price":129,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:44.922Z"},"share_url":"https://firestarter.network/l/lst_1U2dlovx","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_1U2dlovx' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Kefine Quatio' and a budget_max comfortably above $129.00 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."]}}