{"type":"firestarter.listing","listing":{"id":"lst_Bo0Dg4qN","product_name":"Moondrop Horizon 50mm Dynamic Driver Open-Back Headphones","category":"Headphone","description":"Professional over-ear headphone with effortless, high-resolution sound\nFeaturing Moondrop’s newly developed 50mm ULT dynamic driver, dual neodymium magnets, and a lightweight, angled design, The Moondrop Horizon delivers rich tonality, ultra-low distortion, and an immersive soundstage. Easy to drive yet capable of scaling with serious equipment, it’s a versatile headphone that’s great for newcomers and veterans alike. \nfeatherlight and easy to drive\nThe Horizon is light on your head and easy to drive. At just 32Ω impedance and 109dB/Vrms sensitivity, it doesn’t need a dedicated amp—though it scales with one. You can plug it into a laptop, portable DAC, or a serious desktop rig and still hear its low-distortion, full-range performance. \na new kind of dynamic driver\nAfter two years of design and testing, the Moondrop’s 50mm ULT dynamic driver is tuned for linearity, bandwidth, and low distortion. Expect wide dynamic range, smooth highs, punchy bass, and a balanced sound that keeps you locked in. \npowerful magnets, precise motion\nThe driver’s dual internal-external composite magnetic circuit uses two N55 neodymium magnets to reach a peak flux density of 1.85T—unusually high for a headphone of this type. More magnetic flux means better control of the diaphragm’s motion and more energy efficiency, translating to clean transients and a more effortless sound.\ntitanium meets liquid silica gel\nThe diaphragm uses a titanium-plated PEN polymer dome combined with a double-layer liquid silica gel suspension. This hybrid approach improves rigidity, damping, and reliability, keeping treble extension crisp while allowing for long, low-frequency strokes without breakup. The liquid silica gel suspension also handles larger amplitudes with stability.\nangled for your ears\nInside the cups, the driver sits at an intentional angle to better align with your ears’ natural shape. This design helps sound waves reach your ear from the front at a more realistic angle, creating a wider and more ","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823409.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823410.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823420.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823419.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823418.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823417.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823416.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823415.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823414.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823413.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823412.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823411.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823424.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823423.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823422.jpg?v=1776670043","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-moondrop-headphone-moondrop-horizon-50mm-dynamic-driver-open-back-headphones-1176823421.jpg?v=1776670043"],"price":199.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:57.464Z"},"share_url":"https://firestarter.network/l/lst_Bo0Dg4qN","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_Bo0Dg4qN' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Moondrop Horizon 50mm Dynamic Driver Open-Back Headphones' and a budget_max comfortably above $199.99 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."]}}