{"type":"firestarter.listing","listing":{"id":"lst_7n0v8Ql8","product_name":"GUSTARD U26 USB Digital Interface","category":"Digital-to-Digital Converter","description":"Digital done right\nThe Gustard U26 isn’t a DAC or an amp. It’s the digital bridge that ties your whole audio system together. Designed in collaboration with Amanero Technologies, it transforms USB input into ultra-precise digital output for your DAC through IIS, AES, or coaxial connections. With native DSD2048 and PCM 1.536MHz support, a temperature-controlled OCXO clock system, and independent power regulation, it delivers clean, stable, and timing-perfect data for the rest of your chain to shine.\nA powerful foundation\nThe U26 runs on a built-in linear power supply with an audio-grade toroidal transformer. Two independent power supplies separately handle USB and digital circuits, ensuring the cleanest signal path and consistent performance over long listening sessions.\nFiltering built for audiophiles\nThe main filter capacitors deliver a total capacity of 80,000µF. That means robust, stable current delivery no matter how demanding your DAC or amplifier might be. Gustard’s discrete power design pairs metal-cased transistors with TO-3 heat-sink housings, maintaining cool operation even when the night slips away from you.\nDual rectifier bridges\nThe U26 uses dual rectifier bridges with metal heat sinks rated for 800V DC reverse voltage and 25A current. Forward voltage drop is a mere 1.1V at 12.5A, with a surge current capacity of 400A. In short: efficient conversion, low heat, and dependable long-term performance.\nOCXO and K2 clock system\nAt its core, a temperature-controlled OCXO crystal oscillator and K2 ultra-low-noise PLL clock generate dual clock signals—98.3040MHz and 90.3168MHz—with ±0.1ppm stability. These clocks suppress jitter at the source, keeping your DAC’s conversion process free from timing errors. The result is sharper transient response, improved imaging, and a blacker noise floor.\nCPLD digital signal shaping\nA custom programmable logic device re-shapes IIS signals after isolation to remove any residual jitter. Think of it as signal reconstruction at th","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109880.jpg?v=1762375117","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109879.jpg?v=1762375120","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109870.jpg?v=1762374405","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109872.jpg?v=1762374411","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109869.jpg?v=1762374414","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109868.jpg?v=1762374292","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109865.jpg?v=1762374283","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109860.jpg?v=1762374296","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109859.jpg?v=1762374277","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109867.jpg?v=1762374289","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109866.jpg?v=1762374286","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109864.jpg?v=1762374280","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109863.jpg?v=1762374169","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109862.jpg?v=1762374171","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109861.jpg?v=1762374159","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109858.jpg?v=1762374166","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109857.jpg?v=1762374164","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109856.jpg?v=1762374157","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109855.jpg?v=1762374174","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109854.jpg?v=1762374051","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109853.jpg?v=1762374049","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109852.jpg?v=1762374042","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109874.png?v=1762374041","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109873.jpg?v=1762375123","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109878.jpg?v=1762375129","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109871.jpg?v=1762375126","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109877.jpg?v=1762375009","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109876.jpg?v=1762375007","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203109875.jpg?v=1762375015","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203139908.jpg?v=1762388678","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-gustard-digital-to-digital-converter-gustard-u26-usb-digital-interface-1203139907.jpg?v=1762388558"],"price":999,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:57.081Z"},"share_url":"https://firestarter.network/l/lst_7n0v8Ql8","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_7n0v8Ql8' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy GUSTARD U26 USB Digital Interface' and a budget_max comfortably above $999.00 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."]}}