{"type":"firestarter.listing","listing":{"id":"lst_1STGsUr9","product_name":"Kiwi Ears Cadenza II","category":"Earphones/IEMs","description":"\nUnmatched 10mm Titanium DD with KARS 2.0 for Audiophile-Level Sound\nWith enhanced tonal balance, the Cadenza II delivers deep lows, vibrant mids, and detailed treble for a full-range, immersive listening experience. Its lightweight design, premium materials, and detachable cable system ensure durability, comfort, and versatile connectivity. Whether you're producing music, gaming, or simply enjoying your favorite tunes, the Cadenza II provides exceptional clarity, accuracy, and long-term listening comfort.\n\n\n\n\nUnmatched Bass Precision with KARS 2.0\nThe Cadenza II unveils the next generation of Kiwi Acoustic Resonance System: KARS 2.0. Since its debut, significant optimizations have been made to make KARS 2.0 more efficient, better integrated into the acoustic structure, and more precisely tune the low-end. With KARS 2.0, the Cadenza II features pin-point sub-bass tuning, showcasing a powerful 8dB bass that precisely cuts off at 200Hz for a clean, true subwoofer-like lows. New to KARS 2.0, the low-midrange has also been delicately tuned, allowing a 300~400Hz bump that adheres to modern tuning preferences and providing lush uncolored warmth in the mids.\n\n\n\n\n\nNew Titanium-Coated Diaphragm Driver for Superior Detail\nTo maximize technicalities and sound quality, a new dynamic driver has been developed. A new titanium-coated polyethylene terephthalate diaphragm, which combines the strength of titanium with the fluidity of polyethylene terephthalate was developed. Combined with a new powerful magnetic array structure, this dynamic driver provides the highest technicalities and resolution among Kiwi Ears’ dynamic drivers so far.\n\n\n\n\n\nUnparalleled Tonal Superiority\nThe goal for the Cadenza II was to present the ultimate tonal balance and technicality for all audiences. The Cadenza II was painstakingly tuned, first redesigning KARS 2.0 to match the new dynamic driver, with adjustments at the micrometer scale to perfectly tune the subbass. The midrange required a slight hump t","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/KiwiEarsCadenzaII_212.png?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/KiwiEarsCadenzaII_10.jpg?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/KiwiEarsCadenzaII_2121.png?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kiwi_Ears_Cadenza_II_49.jpg?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kiwi_Ears_Cadenza_II_50.jpg?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kiwi_Ears_Cadenza_II_52.jpg?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kiwi_Ears_Cadenza_II_51.jpg?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Kiwi_Ears_Cadenza_II_53.jpg?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/KiwiEarsCadenzaII_3.png?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/KiwiEarsCadenzaII_33.png?v=1768285221","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/2_9195df24-acfb-429d-bf90-2afa49745351.png?v=1776765484","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/1_e72c71f0-71c1-4a45-8182-688f2e71fea0.png?v=1776765483"],"price":49.99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:44.250Z"},"share_url":"https://firestarter.network/l/lst_1STGsUr9","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_1STGsUr9' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Kiwi Ears Cadenza II' and a budget_max comfortably above $49.99 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."]}}