{"type":"firestarter.listing","listing":{"id":"lst_yhLdMiem","product_name":"KZ Sonata X","category":"In-Ear Monitors","description":"  Endgame Flagship, All-New Evolution The KZ Sonata X is designed for listeners pursuing true endgame HiFi performance without compromise. Built with 28 balanced armature drivers, a redesigned acoustic structure, and KZ’s second-generation self-developed low-frequency driver technology, the Sonata X delivers studio-grade clarity, balanced tuning, and exceptional detail retrieval. Combining professional monitoring capability with immersive musicality, the Sonata X is engineered to redefine the standards of flagship multi-driver IEMs.   28 Balanced Armature Drivers The Sonata X features an extraordinary 28 balanced armature driver configuration, creating a highly detailed and layered listening experience. This advanced multi-driver architecture enables independent frequency handling across the entire spectrum, delivering impactful bass, natural mids, sparkling treble, and ultra-high-frequency extension with exceptional precision and low distortion.   Precision 4-Way Electronic Crossover A professionally engineered 4-way electronic crossover ensures every driver operates independently and accurately within its dedicated frequency range. This sophisticated tuning architecture minimizes frequency overlap and crosstalk while improving coherence, resulting in cleaner bass response, richer vocals, smoother transitions, and highly accurate instrument separation.   Second-Generation 22955 Bass Driver The newly upgraded second-generation 22955 low-frequency driver introduces redesigned magnetic circuits and diaphragm structures for enhanced bass extension, faster transient response, and tighter control. Combined with the all-new internal acoustic chamber design, the Sonata X achieves stronger vocal focus, improved imaging accuracy, and a deeper, more immersive soundstage presentation.   Wide-Frequency Reference Acoustic Tuning Carefully tuned to follow a natural listening target response, the Sonata X offers balanced full-frequency performance from deep sub-bass to extended ul","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/1_254c110a-661a-4637-9ac8-f48a1b4771e0.jpg?v=1779876947","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/X---SKU.jpg?v=1779876947"],"price":179.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:43.921Z"},"share_url":"https://firestarter.network/l/lst_yhLdMiem","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_yhLdMiem' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy KZ Sonata X' and a budget_max comfortably above $179.99 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."]}}