{"type":"firestarter.listing","listing":{"id":"lst_1hPAEGdt","product_name":"Sennheiser HD 560S Open-back Reference Headphones","category":"Headphone","description":"Natural and accurate reference sound\nWith linear acoustics tailored to extended listening sessions and smooth, gratifying bass performance, the HD 560S was crafted for the analytical audio enthusiast.\nReveal the truth in your music\nToday’s audiophiles monitor their music with measured purpose on a wide range of devices from headphone amplifiers, audio interfaces, computers, and more. The HD 560S delivers the linear performance required by analytical audio enthusiasts at a breakthrough value, allowing the listener to have an honest look inside their music.\n\nOpen earcups for open minds\nThe HD 560S features an open-back design that provides natural propagation of sound waves. The E.A.R. (Ergonomic Acoustic Refinement) angled driver alignment recreates the optimal triangular listening position you regularly find in hi-fi loudspeaker setups. This combination creates a wide, articulate soundstage without the need for room treatment, letting you hear the neutral version of your music unaffected by the artifacts of a confined space.\n\nSignature sound\nThe HD 560S transducers are specifically tuned for accuracy, offering dependable A/B comparisons of components, remasters, and media formats. The entire frequency range is honest, complemented by smooth, deep bass extension that reveals what nearfield loudspeakers often struggle to reproduce—especially between 20 and 50 Hz. The 120 ohm transducer is all-new, featuring a specialized polymer blend in its membrane for linear excursion and improved brilliance above 10 kHz. The drive magnet offers highly efficient power while its sophisticated damping system manages ventilation—this combination yields deeper bass while mitigating the distortion that otherwise impacts clarity—a difference only the most discerning listeners can appreciate. Whether you are exploring the catalog of an undiscovered artist or revisiting a vintage audiophile preamp the HD 560S offers a fatigue-free listen that you can depend on.\n\nComfort is king\nAlthough th","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-sennheiser-headphone-sennheiser-hd-560s-1227075045.jpg?v=1773347828","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-sennheiser-headphone-sennheiser-hd-560s-1227075044.jpg?v=1773347768"],"price":279.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:55.949Z"},"share_url":"https://firestarter.network/l/lst_1hPAEGdt","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_1hPAEGdt' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Sennheiser HD 560S Open-back Reference Headphones' and a budget_max comfortably above $279.95 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."]}}