{"type":"firestarter.listing","listing":{"id":"lst_p3jv3OBM","product_name":"FiiO K11 R2R High-Performance Desktop DAC / Headphone AMP","category":null,"description":"Features:-\n\n>High-Performance Desktop R2R DAC/AMP.\n\n>Fully Differential 24-Bit R2R Resistor Array.\n\n>NOS/OS Dual-Mode Free Switching.\n\n>Professionally Designed Electronic Volume Control Chipset(NJW1195A).\n\n>Supports 32-Bit/384kHz PCM and Native DSD256 Audio Signal Processing.\n\n>Professional Audio Amp Circuit.\n\n>1300mW+1300mW Strong Output.\n\n>Three-Levels Adjustable Gain.\n\n>Specially Designed Low-Noise Power Supply.\n\n>6.35mm+4.4mm Dual Headphone Output Options.\n\n>High-Quality Emerald Solid-State Capacitors.\n\n>Customized LCD Display Screen.\n\n>Global RGB Logo Light.\n\nFiiO has released a new R2R variant for its highly acclaimed K11 desktop DAC/AMP. With a self-developed fully differential 24-Bit R2R Resistor Array, the K11 R2R brings a smooth and rich sound to its listeners. The K11 R2R has NOS/OS dual operating modes, each having its own sound characteristics. The DAC/AMP houses dual headphone output options, one 6.35mm single-ended and another 4.4mm balanced port. Equipped with a powerful amp section with three-level adjustable gain and high-quality emerald solid-state capacitors, the K11 R2R delivers a strong output of 1300mW per channel. Experience a rich, smooth, organic R2R sound with the FiiO K11 R2R, available now!!\n\n\nFully-Differential 24-Bit R2R DAC Array:-\n\n\nFiiO has featured its newly developed four-channel fully differential 24-bit R2R resistor array on the K11 R2R. It consists of 48 resistors per channel, a total of 192 high-precision ultra-thin film resistors with 0.1% accuracy and low-temperature drift between the four channels. It promises clean and crisp output with dark background thanks to the specially developed audio circuit architecture.\n\n\nNOS/OS Dual Operating Modes:-\n\n\nFiiO K11 R2R has NOS(Non-Oversampling) and OS(Oversampling) dual operating modes. These are freely switchable and offer dual sound characteristics with the device. The NOS mode maintains the original sampling rate while signal processing whil","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-932885.jpg?v=1720210865","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-862638.jpg?v=1735547569","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-k11-r2r-silver-752892.jpg?v=1735547535","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-948229.jpg?v=1735547523","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-942437.jpg?v=1735547470","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-465131.jpg?v=1735547459","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-905051.jpg?v=1735547481","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-222112.jpg?v=1735547542","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-322592.jpg?v=1735547562","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-257076.jpg?v=1735547520","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-434590.jpg?v=1737068118","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-593435.jpg?v=1737068029","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-k11-r2r-red-608022.jpg?v=1737068182","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-k11-r2r-black-743046.jpg?v=1737068111","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k11-r2r-high-performance-desktop-dac-headphone-amp-hifigo-k11-r2r-silver-140645.jpg?v=1737068147"],"price":169.99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:29.736Z"},"share_url":"https://firestarter.network/l/lst_p3jv3OBM","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_p3jv3OBM' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy FiiO K11 R2R High-Performance Desktop DAC / Headphone AMP' and a budget_max comfortably above $169.99 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."]}}