{"type":"firestarter.listing","listing":{"id":"lst_lZP8v4XS","product_name":"FiiO K11 R2R","category":"AMP & DAC","description":"                                            Fully Differential 24-bit R2R DAC                        Engineered with precision, the K11 RAR features a self-developed, four-channel fully differential 24-bit R2R DAC using dual 48-precision thin-film resistor arrays per channel—totaling 192 resistors with 0.1% tolerance and minimal temperature drift. This design guarantees a uniquely charming sound signature that elevates your audio experience.                                                                                    Superior Noise Performance                        Utilizing a fully differential architecture, the K11 RAR dramatically reduces noise and minimizes unwanted FFT harmonics compared to typical designs. This results in a darker, purer musical background that lets every nuance of your audio come through with exceptional clarity.                                                                                    Versatile Sound Modes                        The K11 RAR offers dual NOS (Non-Oversampling) and OS (Oversampling) modes to suit your listening preferences. NOS mode preserves the original sampling rate for an authentic, organic sound, while OS mode upsamples to a high 384kHz rate for refined, crystal-clear audio performance.                                                                                    True 24-bit Decoding                        With support for PCM 384kHz/24bit and DSD256 decoding (with DSD256 converted via Native mode), this DAC effortlessly handles high-precision audio signals. Every subtle detail in your music is faithfully reproduced, delivering an outstanding and immersive listening experience.                                                                                    Precision Volume Control                        Equipped with the NJW1195A four-channel electronic volume controller and featuring three independent gain levels with dedicated volume curves, the K11 RAR adapts seamlessly to everything from delicat","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/20250321170141.jpg?v=1742548098","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/20250321170158.png?v=1742548098"],"price":166,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:45.198Z"},"share_url":"https://firestarter.network/l/lst_lZP8v4XS","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_lZP8v4XS' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy FiiO K11 R2R' and a budget_max comfortably above $166.00 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."]}}