{"type":"firestarter.listing","listing":{"id":"lst_uKu0M3T1","product_name":"YULONG DA2 All-in-one Personal Audio Center Pre-amp / Head amp/ DAC","category":"DAC (Digital-to-Analog Converter)","description":"Note: This is a pre-order with an expected ship date of March 15th.\nDesktop DAC + preamp + headphone amplifier\nThe Yulong DA2 is a desktop all-in-one that combines network streaming, digital-to-analog conversion, preamplification, and Class-A headphone amplification in a single chassis. It's built around Yulong’s 8th-generation JIC digital processing system, an AKM-based DAC architecture, a fully balanced Class-A analog stage, and a relay-controlled R2R volume system. The DA2 is designed for listeners who want one component to anchor both headphone and speaker-based listening.\nIntegrated network streaming architecture\nThe DA2 handles network streaming internally using Yulong’s proprietary streaming module, with audio data clocked directly from dual Accusilicon AS338 oscillators. Digital audio is transmitted via Slave I²S referenced to the master clock, reducing timing errors that can occur with conventional USB or software-driven interfaces. Support includes AirPlay 2, DLNA, Squeezelite, Roon Bridge, HQPlayer NAA, and Daphile, allowing the DA2 to sit comfortably in a modern networked audio system.\nFPGA-based digital signal control\nAt the core of the DA2 is Yulong’s 8th-generation Jitter and Interface Control system, implemented through a tightly-integrated FPGA and CPU platform running a streamlined Linux kernel. This architecture manages network streaming, USB audio, digital inputs, clocking, and system control within a unified signal path. \nAKM DAC with Class-A output stage\nThe DA2 uses an AK4191 and AK4499EX DAC combination, paired with a high-current Class-A buffer stage. Power is supplied by a low-noise analog regulation circuit designed for stable current delivery under dynamic load. This approach supports low distortion and wide dynamic range while maintaining a natural tonal balance that works well with both headphones and active speakers.\nLossless R2R relay volume control\nVolume adjustment is handled by a four-channel, 100-step relay-controlled R2R resistor","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503192.jpg?v=1770811447","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503193.jpg?v=1770811388","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503176.jpg?v=1770811327","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503174.jpg?v=1770811267","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503175.jpg?v=1770811209","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503177.jpg?v=1770811091","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503171.jpg?v=1770811030","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503172.jpg?v=1770811149","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503170.jpg?v=1770810968","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503169.jpg?v=1770810848","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503168.jpg?v=1770810909","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503167.jpg?v=1770810788","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503166.jpg?v=1770812168","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503165.jpg?v=1770813308","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503164.jpg?v=1770813368","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503163.jpg?v=1770813429","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503162.jpg?v=1770810432","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503173.jpg?v=1770810371","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503178.jpg?v=1770810312","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-yulong-dac-digital-to-analog-converter-yulong-da2-all-in-one-personal-audio-center-pre-amp-head-amp-dac-1220503179.jpg?v=1770810253"],"price":2499,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:56.082Z"},"share_url":"https://firestarter.network/l/lst_uKu0M3T1","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_uKu0M3T1' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy YULONG DA2 All-in-one Personal Audio Center Pre-amp / Head amp/ DAC' and a budget_max comfortably above $2499.00 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."]}}