{"type":"firestarter.listing","listing":{"id":"lst_9YteC9ZC","product_name":"KZ Symphony","category":"Earphones/IEMs","description":"\n\nExpansive Soundstage with Advanced Planar Driver\nThe KZ Symphony distinguishes itself with a 13.2mm planar driver, delivering an expansive soundstage unmatched by traditional dynamic drivers. This technological advancement ensures high-frequency and ultra-high-frequency sounds are rendered with unparalleled clarity, offering listeners vivid audio details.\n\n\nDeep Bass Enhancement by Dynamic Driver\nThe inclusion of a 6mm high-performance dynamic driver addresses the typical bass shortfall of planar drivers, enriching the KZ Symphony's bass response. This driver synergy creates a balanced, full-bodied sound profile across all frequencies for a deeply immersive listening experience.\n\n\nBenchmark Acoustic Performance through Fusion Technology\nKZ Symphony's innovative blend of planar and dynamic drivers sets a new industry benchmark. This dual-driver fusion results in extraordinary acoustic effects, with a frequency response curve that excels across low, mid, high, and ultra-high frequencies, establishing the KZ Symphony as a paragon of balanced and detailed audio reproduction.\n\n\nHollow Shell Design for Enhanced Efficiency\nThe hollow shell design of the KZ Symphony enhances the efficiency of its sound transduction, minimizing vibration and delivering sound more powerfully. This design optimization ensures pristine sound reproduction, maximizing the strengths of both planar and dynamic drivers.\n\n\nSuperior Sound Delivery with High-Precision 3D-Printed Housing\nEmploying cutting-edge 3D printing technology, the housing of the KZ Symphony is crafted with exceptional precision, featuring four independent sound conduits. This advanced manufacturing technique improves the accuracy and uniformity of the earphones' internal structure, leading to superior sound delivery.\n\n\nOptimal Comfort with Ergonomic Design\nDrawing on extensive anatomical research, the KZ Symphony's ergonomic design ensures a secure and comfortable fit. The use of memory foam ear tips enhances sealing and comfor","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/SKU_cbeb2c0f-846d-4d2f-ba2f-e8c545db0c2f.jpg?v=1709546295","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/SKU_d5008e7f-3fbf-44b5-b6fd-6db5f7292e85.jpg?v=1709546302","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/4_810794a4-a350-4552-bee0-4217e31f1a5b.jpg?v=1709546302","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/1_fc4666a8-3895-40de-8b97-52e8d53ad546.jpg?v=1709546304","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/2_52675914-63a9-4877-9620-48c73b9facf9.jpg?v=1709546298","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/3_820c8c7f-bd4b-45fd-8137-2941b397dd23.jpg?v=1709546300","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/8_955fa174-bdc7-413e-add6-c9df53ef943e.jpg?v=1709546296","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/6_33b84893-ce75-4a04-b33a-59bdf1a1e665.jpg?v=1709546301","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/7_41e565a3-9b8d-4ef0-b8e4-6ed8cf6c6bf8.jpg?v=1709546299"],"price":70.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:46.294Z"},"share_url":"https://firestarter.network/l/lst_9YteC9ZC","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_9YteC9ZC' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy KZ Symphony' and a budget_max comfortably above $70.99 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."]}}