{"type":"firestarter.listing","listing":{"id":"lst_PCmDs-Sn","product_name":"Cayin N3Ultra / N3 Ultra Dual AK4493S Triple Timbre Digital Audio Player","category":null,"description":"\nFeatures:-\n\n>Proprietary Gen3 Tube Circuit.\n\n>Military Grade NOS Vaccum Tube.\n\n>Classic, Modern, Solid-State Triple Timbre.\n\n>Dual AK4493S DAC Chips.\n\n>Snapdragon 425 SoC Chipset.\n\n>Supports 32-Bit/768kHz PCM and Native DSD512 Decoding.\n\n>Dual Femtosecond Ultra-Low Jitter Oscillators.\n\n>4-Ch JRC Electronic Volume Control.\n\n>Fully Customizable 10-Band Parametric EQ.\n\n>3.5mm+4.4mm Headphone and Line-Out Options.\n\n>Digital USB Output.\n\n>Hi-Res USB DAC Functionality.\n\n>4.1” TFT Display Screen.\n\n>4500mAH High-Capcity Battery.\n\n>QC3.0 Fast Charging Support.\n\n>Upto 10 Hr Battery life.\n\nCayin N3 Ultra is a brand-new portable audio player from the house of Cayin. It comes as an upgrade to the highly acclaimed N3 Pro and packs a military-grade NOS Vaccum Tube architecture. The Cayin N3 Ultra has three different timbre options that users can switch as they like, this includes Classic Tube, Modern Tube, and Solid-State Timbre. At the DAC Section, the N3 Ultra houses a dual AK4493S DAC setup, one for each channel. It has 3.5mm and 4.4mm headphones and line-out options. Cayin N3 Ultra also has a 10-Band PEQ that allows you to play around and get your preferred output with the device. Get an amazing listening experience with the Cayin N3 Ultra packing its Tube amp section!!\n\nMilitary-Grade NOS Tubes:-\n\nCayin has equipped the latest N3 Ultra with two Raytheon JAN6418 military-grade miniature direct-heated pentode NOS Vacuum tubes. All the outputs including the 4.4mm balanced, 3.5mm single-ended, and line outputs, each have support for both Vacuum tube and solid-state timbres. The tubes are carefully placed in their in-house developed shock-absorbing frame. They have a suspension effect for complete protection.\n\nThree Timbres, One Device:-\n\nCayin N3 Ultra promises an authentic Hi-Res audio listening experience with a rich and melodious Tube Timbre. The device has three user switchable modes, Classic Tube, Modern Tube, and Solid-State.","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-718573.jpg?v=1711661446","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-602273.jpg?v=1711661373","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-400760.jpg?v=1711661530","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-226649.jpg?v=1711661384","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-163830.jpg?v=1711661387","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-n3-ultra-black-506243.jpg?v=1711661534","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-312117.jpg?v=1711661482","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-hifigo-291677.jpg?v=1711661467","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-cayin-n3-ultra-case-purple-117012.jpg?v=1756115081","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-cayin-n3-ultra-case-green-675004.jpg?v=1756115013","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/cayin-n3ultra-n3-ultra-dual-ak4493s-triple-timbre-digital-audio-player-cayin-n3-ultra-case-black-351883.jpg?v=1756115010"],"price":529.99,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:30.025Z"},"share_url":"https://firestarter.network/l/lst_PCmDs-Sn","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 ","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_PCmDs-Sn' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Cayin N3Ultra / N3 Ultra Dual AK4493S Triple Timbre Digital Audio Player' and a budget_max comfortably above $529.99 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."]}}