{"type":"firestarter.listing","listing":{"id":"lst_6Oj-RO0O","product_name":"DDHiFi E13P Memory 4.4","category":"Earphones/IEMs","description":"                                          High-Efficiency Planar Magnetic Driver                The Memory 4.4 features a custom 13mm ultra-linear planar magnetic driver co-developed with MOONDROP. Its dual-suspension ring-type magnetic circuit with a four-magnet array delivers 4× the transduction efficiency of equivalent dynamic drivers and 10× that of conventional 14.5mm planar units. The result is a compact driver capable of deep bass, transparent clarity, and low distortion even during large dynamic swings, all easily driven from lowpower sources.                                                                                Two Distinctive Chassis, One Acoustic Intent                Memory 4.4 comes in two chassis variants. The Memory Pd4.4 uses pure copper shells with a palladium-plated finish for superior passive noise isolation and a more substantial in-ear feel. The Memory AL4.4 features AL6063 aviation aluminum CNC-formed shells for an exceptionally lightweight build. Both versions share identical dimensions, driver configuration, and connector architecture, offering a simple choice based on material and wearing preference without any difference in acoustic design.                                                                                Retuned for Pure 4.4mm Playback                Distinct from the USB-decoding Memory variant, the Memory 4.4 receives a full acoustic retuning of the front and rear cavities. The positioning and area of the vents have been redesigned to optimize performance when driven directly from high-quality 4.4mm balanced sources. This dedicated architecture ensures a purer signal path and broader source compatibility, focusing entirely on the faithful reproduction of HiFi music in a native balanced connection.                                                                                Purpose-Built Cable and Connectivity                The earphone is terminated with a fixed 4.4mm balanced plug and a custom shielded cable sel","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/AL4-03_f8435198-30fc-4ef2-bd35-6681fdd074bc.jpg?v=1778493909","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Pd4-02_153b5aa3-c499-4eaf-b383-d30e852f5827.jpg?v=1778493909","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/AL4-13_e9179263-9439-44b8-90ec-f200ccf4608b.jpg?v=1778493909","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Pd4-13_d1344f62-009f-4ff1-8079-1604e2d931f3.jpg?v=1778493909","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/AL4-01_6ca600e7-3797-4587-8e8d-d566775a5409.jpg?v=1778493909","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Pd4-01_9b2088da-18eb-4122-95ac-a9f9a0327f42.jpg?v=1778493909","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/AL4-11_4a12239f-d984-42e9-8cfe-565419e5b414.jpg?v=1778493909","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/Pd4-11_b119221c-a0b3-476a-adde-f80e3e8cf401.jpg?v=1778493909"],"price":189.99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:44.011Z"},"share_url":"https://firestarter.network/l/lst_6Oj-RO0O","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_6Oj-RO0O' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy DDHiFi E13P Memory 4.4' and a budget_max comfortably above $189.99 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."]}}