{"type":"firestarter.listing","listing":{"id":"lst_tzCyM0w-","product_name":"HiBy FC4 MQA 8× Unfolding Dual ES9218PC Portable USB DAC / Headphone AMP","category":"Headphone AMP DAC","description":"Features:-\n\n>Professionally designed audio architecture.\n\n>Premium Dual DAC arrangement.\n\n>FPGA=based dual independent crystal oscillators.\n\n>Dual Headphone outputs(3.5mm Single-ended+4.4mm Balanced).\n\n>Powerful output.\n\n>8x MQA decoding.\n\n>High-quality USB Receiver supporting 32-Bit/768kHz PCM and native DSD256 signals.\n\n>Low-power consumption.\n\n>All-metal construction.\n\n>Hardware volume control.\n\n>RGB indicator light.\n\n>Hi-Res certified.\n\nTechnical Specifications:-\n\n>DAC Chipset: 2xES9218PC.\n\n>Output Power: Up to 340mW(32Ω).\n\n>THD+N: ≥0.0006%.\n\n>Noise floor: 1.7uVrms.\n\n>SNR: 123dB.\n\n>DNR: 123dB.\n\n>Crosstalk rejection: 98dB.\n\n>Frequency response range: 20Hz-90kHz.\n\n>Weight: 21.7grams.\n\n>Dimensions: 65.3x22.1x11.9mm.\n\nMeet the all-new HiBy FC4, a highly-powerful yet ultra-compact USB DAC/AMP from HiBy. FC4 bridges the gap between the entry-level FC3 and the flagship FC5 dongle DACs. It has got unmatched amplification circuit that provides best-in-class powerful output ratings of up to 340mW @ 32Ω of load. FC4 is designed to cater all your Hi-Res audio needs with its premium Dual DAC chipset from Sabre Technologies. This little beast packs enough juice to power most of your IEMs and some low-power requiring headphones too with ease!!\n\nPremium Dual DAC Chipset With High-Quality Sabre DACs:-\n\nHiBy haș equipped the latest FC4 with a premium Dual DAC chipset. The pair houses two ES9218PC DAC chips from Sabre Technologies. They are supported by an efficient USB processor enabling the device to support high-resolution PCM(32-Bit/768kHz) and native DSD256 decoding. The SABRE DACs enable the FC4 to get top-quality performance with ultra-low signal distortion and high SNR ratings.\n\nProfessionally Designed Audio Architecture:-\n\nWith a wide array of successful products from HiBy, the brand has got expertise in designing high-resolution audio devices. They have designed the audio circuitry of the FC4 solely for th","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/hiby-fc4-mqa-8x-unfolding-dual-es9218pc-portable-usb-dac-headphone-amp-headphone-amp-dac-hifigo-495187.jpg?v=1714596339","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/hiby-fc4-mqa-8x-unfolding-dual-es9218pc-portable-usb-dac-headphone-amp-headphone-amp-dac-hifigo-350302.jpg?v=1714596293","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/hiby-fc4-mqa-8x-unfolding-dual-es9218pc-portable-usb-dac-headphone-amp-headphone-amp-dac-hifigo-fc4-black-712096.jpg?v=1714596304","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/hiby-fc4-mqa-8x-unfolding-dual-es9218pc-portable-usb-dac-headphone-amp-headphone-amp-dac-hifigo-243300.jpg?v=1714596318","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/hiby-fc4-mqa-8x-unfolding-dual-es9218pc-portable-usb-dac-headphone-amp-headphone-amp-dac-hifigo-108360.jpg?v=1714596307","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/hiby-fc4-mqa-8x-unfolding-dual-es9218pc-portable-usb-dac-headphone-amp-headphone-amp-dac-hifigo-fc4-blue-532454.jpg?v=1714596398"],"price":99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:31.014Z"},"share_url":"https://firestarter.network/l/lst_tzCyM0w-","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_tzCyM0w-' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy HiBy FC4 MQA 8× Unfolding Dual ES9218PC Portable USB DAC / Headphone AMP' and a budget_max comfortably above $99.00 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."]}}