{"type":"firestarter.listing","listing":{"id":"lst_FH-d00An","product_name":"TOPPING E50 II Desktop DAC (Digital-to-Analog-Convertor)","category":"DAC (Digital-to-Analog Converter)","description":"AK4497S balanced desktop DAC\nThe Topping E50 II is a compact desktop DAC designed for listeners who want clean power, flexible connectivity, and fine-grained control in a small footprint. An AK4497S DAC stage, XU316 USB interface, native DSD512 support, LDAC Bluetooth, and balanced TRS/RCA line outputs give you a desktop hub that slots neatly into a work desk or studio and raises the bar for what your music can do.\nCompact desktop hub for modern listening\nThe E50 II is built for the desk first: small enough to sit under a monitor, solid enough to anchor a serious two-channel chain. With USB-C, coaxial, and optical digital inputs alongside balanced TRS and single-ended RCA line outputs, it connects cleanly to powered monitors, power amplifiers, and external headphone amps. \nAKM decoding with ultra-low distortion\nAt its core is AKM’s AK4497S stereo DAC, part of the company’s updated VELVET SOUND family. The line-out stage delivers a THD+N of 0.0001% at 1kHz and up to 131dB of dynamic range, which means the DAC adds virtually no audible noise or distortion of its own. Quiet sections stay quiet, dense mixes stay open, and small details—reverb tails, room tone, fingers on strings—stay intact instead of smearing into the background.\nFlagship USB platform with native DSD512\nUSB duties are handled by the XMOS XU316 platform, giving the E50 II native support for DSD64–DSD512 and PCM from 44.1kHz up to 768kHz at 16–32 bit. A custom Thesycon USB driver on Windows and driverless operation on macOS keep the connection stable for both everyday streaming and critical listening. \nFPGA clocking and ADAT-capable optical input\nCoaxial and optical inputs run through an FPGA+PLL-based TopSync circuit with JitterNull processing to keep digital timing errors extremely low—down to about −160dB in common jitter tests. The optical input doubles as a dual-format S/PDIF and ADAT port, so the E50 II can slot into more advanced studio-style workflows where multi-channel ADAT is part of the 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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_FH-d00An' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy TOPPING E50 II Desktop DAC (Digital-to-Analog-Convertor)' and a budget_max comfortably above $199.00 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."]}}