{"type":"firestarter.listing","listing":{"id":"lst_ddJuBr-F","product_name":"YULONG DAART D39 ESS9039PRO Music Streamer & Desktop DAC","category":"DAC (Digital-to-Analog Converter)","description":"Stream, decode, and dial it to perfection\nThe YULONG D39 is a network-enabled DAC built around the company's seventh-generation JIC processor and the flagship ESS9039PRO chip. It’s designed for listeners who want high-resolution streaming, USB audio, and digital inputs—all handled by an efficient, quiet, Linux-based system. Dual toroidal transformers, a femtosecond clock, and flexible output options make it equally suited for desktop and speaker systems. \nSeventh-generation JIC processing\nThe D39 uses YULONG’s latest JIC processor—short for Jitter and Interface Control. This isn’t just a marketing term. It’s a full-blown digital signal platform with an FPGA core that handles USB decoding, SPDIF demodulation, FIFO buffering, and PLL synchronization all in hardware. The benefit is less jitter, more precise timing, and better sound from every input.\nNetwork streaming without the noise\nUnlike many streamers that depend on general-purpose computers or noisy USB interfaces, the D39 uses a dedicated dual-core processor running a custom Linux core. All networking, streaming protocols, and digital audio processing are handled internally. That means cleaner signal paths, less noise, and reliable playback across platforms like Airplay2, DLNA, LMS, Squeezelite, Roon Bridge, Daphile, HQ NAA, and Spotify.\n\nESS9039PRO DAC with bypassable ASRC\n\nThe D39 uses the ESS9039PRO DAC in synchronous mode, allowing you to bypass its internal ASRC (asynchronous sample rate converter) and decode native audio sample rates directly. The analog section is powered by a dedicated linear supply with low-noise voltage regulation, maintaining signal integrity through the RCA and XLR outputs.\n\nFPGA-based USB interface\n\nInstead of relying on third-party USB solutions, YULONG built their own: a pure hardware USB interface using FPGA and ULPI. This design bypasses the operating system’s audio stack and avoids software bottlenecks. It supports up to PCM768kHz and native DSD1024. The result is faster signal","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-xduoo-dac-digital-to-analog-converter-yulong-daart-d39-ess9039pro-music-streamer-desktop-dac-1154368340.jpg?v=1743798646","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-xduoo-dac-digital-to-analog-converter-yulong-daart-d39-ess9039pro-music-streamer-desktop-dac-1154368337.jpg?v=1743798416","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-xduoo-dac-digital-to-analog-converter-yulong-daart-d39-ess9039pro-music-streamer-desktop-dac-1154368339.jpg?v=1743798641","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-xduoo-dac-digital-to-analog-converter-yulong-daart-d39-ess9039pro-music-streamer-desktop-dac-1154368341.jpg?v=1743798649","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-xduoo-dac-digital-to-analog-converter-yulong-daart-d39-ess9039pro-music-streamer-desktop-dac-1154368338.jpg?v=1743798420"],"price":939,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:57.687Z"},"share_url":"https://firestarter.network/l/lst_ddJuBr-F","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_ddJuBr-F' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy YULONG DAART D39 ESS9039PRO Music Streamer & Desktop DAC' and a budget_max comfortably above $939.00 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."]}}