{"type":"firestarter.listing","listing":{"id":"lst_NHY0a0oU","product_name":"Tanchjim Oxygen In-Ear Monitor (IEM) Earphone","category":"Earphone / In-Ear Monitor (IEM)","description":"\nThe Tanchjim Oxygen is a beautiful well built IEM that uses a 9.2 mm graphene dynamic driver, has an ergonomic fit due to its compact size, and produces a smooth sound. The cables are detachable and can be swapped easily. It comes with two cables, a silver plated OFC cable, and another that has an inline microphone and remote. You can also upgrade your cable with the Tanchjim IEM Upgrade Cable.\nReviews\n\n\"Two main definitions followed us while we were examining Tanchjim Oxigen IEMs and writing this review: accurate and clean. This addresses both — overall design and sound.\" - IryxBRO on HeadFi\n\n\n\"Tanchjim deserves a pat on the back for tuning Oxygen. It is an excellent specimen of Harman tuning and is one of best sounding IEMs under $300.\" - Animagus on Head-Fi\n\nIncluded\nTanchjim Oxygen In-Ear Monitor (IEM) Earphone\n2 cables\n6 pairs of ear tips\nCarrying case\nSpecs\n\nDriver unit: 9.2mm graphene dynamic\n\n\nSensitivity: 110 dB\n\n\nImpedance: 32 ohms\n\n\nFrequency response: 10 Hz–40 kHz\n\n\nPlug: ⅛ in (3.5 mm)\n\n\nCable length: 3.9 ft (1.2 m)\n\n","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-tanchjim-earphone-in-ear-monitor-iem-tanchjim-oxygen-in-ear-monitor-iem-earphone-black-10926900379722.jpg?v=1571205469","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-tanchjim-earphone-in-ear-monitor-iem-tanchjim-oxygen-in-ear-monitor-iem-earphone-10926900445258.jpg?v=1571205469","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-tanchjim-earphone-in-ear-monitor-iem-tanchjim-oxygen-in-ear-monitor-iem-earphone-10926901264458.jpg?v=1571205469","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-tanchjim-earphone-in-ear-monitor-iem-tanchjim-oxygen-in-ear-monitor-iem-earphone-10926901395530.jpg?v=1571205469","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-tanchjim-earphone-in-ear-monitor-iem-tanchjim-oxygen-in-ear-monitor-iem-earphone-10926901493834.jpg?v=1571205469","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-tanchjim-earphone-in-ear-monitor-iem-tanchjim-oxygen-in-ear-monitor-iem-earphone-silver-10926901592138.jpg?v=1571205469"],"price":279.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:01.989Z"},"share_url":"https://firestarter.network/l/lst_NHY0a0oU","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_NHY0a0oU' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Tanchjim Oxygen In-Ear Monitor (IEM) Earphone' and a budget_max comfortably above $279.99 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."]}}