{"type":"firestarter.listing","listing":{"id":"lst_4mtAdvVb","product_name":"LETSHUOER S12 Ultra","category":"In-Ear Monitors","description":"\n\n\nDriver Evolution for Unmatched Resolution\nThe LETSHUOER S12 Ultra features a 14.8mm custom planar magnetic driver, refined for consistent, top-tier performance. Extensive internal construction optimization ensures the full dynamic potential and resolution of the driver is unlocked. This evolution delivers enhanced sound accuracy and an immersive listening experience, with deep bass, clear mids, and precise highs.\n\n\nSound Quality Evolution for a Captivating Hi-Fi Experience\nDeep customization and optimization have elevated the sound quality of the S12 Ultra. With natural clarity in the highs and an expanded soundstage, every note is intricately layered, ensuring a balanced sound profile. Whether you're listening to vocals, orchestral arrangements, or complex soundscapes, the S12 Ultra ensures an exceptional, immersive audio experience.\n\n\nDesign Evolution for Enhanced Comfort\nThe S12 Ultra inherits the signature design of the S12 Series, now enhanced with a re-engineered aluminum alloy housing and optimized female connector placement. The ergonomic fit has been further refined using data-driven techniques, ensuring maximum comfort for extended listening sessions. With its sleek and modern look, the S12 Ultra seamlessly combines aesthetics with functionality.\n\n\nCable Evolution for Maximum Fidelity\nEquipped with a 392-core silver-plated copper cable, the S12 Ultra offers excellent conductivity, minimizing signal loss and interference. The included DT01 Pro Type-C to 3.5mm DAC amplifier cable provides seamless connectivity for mobile devices, making high-quality listening effortless and accessible. The combination of high-quality cables and connectors ensures that every detail in the music is faithfully reproduced.\n\n","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/001-gray.jpg?v=1760690578","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/001-mocha.jpg?v=1760690578","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/002-gray.jpg?v=1760690578","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/002-mocha.jpg?v=1760690578","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/005-gray.jpg?v=1760690578","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/005-mocha.jpg?v=1760690578","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/connector.jpg?v=1760690578"],"price":169,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:44.631Z"},"share_url":"https://firestarter.network/l/lst_4mtAdvVb","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_4mtAdvVb' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy LETSHUOER S12 Ultra' and a budget_max comfortably above $169.00 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."]}}