{"type":"firestarter.listing","listing":{"id":"lst_2TGuMEYg","product_name":"HIFIMAN ISVARNA Planar Magnetic Closed-Back Headphones","category":"Headphone","description":"Hybrid closed‑back headphones with planar clarity \nThe HiFiMAN ISVARNA is a premium hybrid headphone crafted for powerful low‑end impact, nuanced mids, and airy highs—all in a closed‑back design that keeps the outside world at arm's length. Combining a nanometer‑thin planar magnetic driver with a dedicated dynamic sub‑bass driver, it delivers a balanced, immersive sound signature with excellent isolation. Rugged yet comfortable, with aluminum cups, plush pads, and three premium cables included, ISVARNA is built for long, focused listening at home or in the studio.\nDetailed Performance with Musical Warmth\n
ISVARNA spans a wide frequency range (6 Hz–60 kHz), hitting lows with authority and mids with richness thanks to the dynamic-planar crossover. Treble is clear and engaging, though pairing with a smoother amplifier may help avoid brightness at high volumes. 

\nBalanced Ergonomics and Build Quality
\nCrafted with precision-milled aluminum cups and a lightweight steel headband topped with padded suede, the headphones distribute their 462 g weight comfortably. Plush ear cushions and a secure fit support long sessions without pressure points. \nProduct highlights

\n\n\nHybrid planar + dynamic driver system \n\n\nClosed-back design reduces ambient noise\n\n\nWide frequency response: 6 Hz–60 kHz \n\n\nEasy to drive (16 Ω impedance, 93 dB sensitivity) works well with desktop and portable amps \n\n\nRobust build with aluminum cups, steel headband, and velour-lined leather strap\n\n\nThree premium cables included: 3.5 mm SE, 6.3 mm SE, and 4-pin XLR balanced\n\n\n\nSpecs

\n\n\nDrivers: True Nanometer Planar Magnetic + Dynamic\n\n\nFrequency Response: 6 Hz–60 kHz \n\n\nSensitivity: 93 dB \n\n\nImpedance: 16 Ω \n\n\nWeight: 462 g (16.3 oz) 

Socket: 3.5 mm input (cable-based connection)\n\n\nCrossover point: ~200–300 Hz between drivers \n\n\nWhat’s included\n\n\n

HIFIMAN ISVARNA closed-back headphones\n\n\n3 m 3.5 mm single-ended cable\n\n\n3 m 6.3 mm single-ended cable\n\n\n3 m 4-pin XLR balanced cable\n\n\nManufacturer's warranty ","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-hifiman-hifiman-isvarna-planar-magnetic-closed-back-headphones-1176357889.webp?v=1751560121","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-hifiman-hifiman-isvarna-planar-magnetic-closed-back-headphones-1176357887.webp?v=1751560017","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-hifiman-hifiman-isvarna-planar-magnetic-closed-back-headphones-1176357886.webp?v=1751560013","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-hifiman-hifiman-isvarna-planar-magnetic-closed-back-headphones-1176357888.webp?v=1751560118","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-hifiman-hifiman-isvarna-planar-magnetic-closed-back-headphones-1176357890.webp?v=1751560125","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-hifiman-hifiman-isvarna-planar-magnetic-closed-back-headphones-1176357885.webp?v=1751560010","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-hifiman-hifiman-isvarna-planar-magnetic-closed-back-headphones-1176357884.webp?v=1751560007"],"price":2899,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:57.433Z"},"share_url":"https://firestarter.network/l/lst_2TGuMEYg","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_2TGuMEYg' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy HIFIMAN ISVARNA Planar Magnetic Closed-Back Headphones' and a budget_max comfortably above $2899.00 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."]}}