{"type":"firestarter.listing","listing":{"id":"lst_QSZVTErm","product_name":"FiiO M33 R2R","category":"Digital Audio Players","description":"                                          Fully Differential 24-Bit R2R Resistor Arrays                The M33 R2R employs fully differential 24-bit R2R resistor arrays, delivering rich analog-like warmth and precision. Each four-channel DAC array contains a total of 192 precision thin-film resistors with 0.1% accuracy and low temperature drift, allowing for detailed, well-balanced, and immersive audio reproduction across headphones of all types. The design preserves the classic R2R sound signature while maintaining clarity and resolution.                                                                                Multi-Stage Tl Op-Amps with 1100mW+1100mW Output                The audio circuit features Tl fully differential op-amps in the pre-amplifier stage and quad INA1620 amplifier chips in parallel for the output stage, providing robust 1100mW+1100mW balanced power. This configuration ensures effortless headphone driving, highly controlled dynamics, and a natural, expansive soundstage. Precision electronic volume control further allows detailed, distortion-free listening even at high output levels.                                                                                High-End Audiophile Components                M33 R2R integrates premium audio components including Tl Burr-Brown OPA1637 differential op-amps, INA1620 amplifier chips, Rubycon film capacitors, and NJW1195A precision volume controller. These components enhance dynamic range, minimize crosstalk, and ensure natural midrange and smooth treble. High-current MOSFETs and a dedicated power supply system deliver clean and stable energy to all audio stages.                                                                                High-Precision Timing &amp; Audio Fidelity                The M33 R2R is equipped with the same ultra-high precision, ultra-low jitter unified clock source found in the flagship M27. It delivers enhanced digital audio processing efficiency and fidelity, providing m","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_32e62de7-8a69-4384-b1ca-b77ae4b49ee3.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_1bba68ea-f18a-4312-9601-81002f189b38.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_763de912-c96b-4427-850d-9522cbb12294.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_77949214-8b64-4763-819e-82bcd2501d27.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_6fc9f4ca-ef66-44a3-a1ce-091bab1d4186.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_d8e0146f-2616-4a6b-b437-82f0336e3b06.png?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_6ca54aa1-e6fd-42a9-8627-47ffa3a64e30.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_0b15b645-65da-43de-8e1d-18a9ce241941.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_f3e09f3e-eefc-4a49-835d-84ebb5c0d82c.png?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_8e6be5a4-7f8c-4e21-a4d9-5343532fa788.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_9fa39f6f-6b6e-4c49-a7cd-4b78269d91fd.jpg?v=1776675874","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_84d6d651-3b91-4790-9b33-c61a305bca16.jpg?v=1776675992","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/M33_d8c4fdb5-7633-4ad4-89f8-c7a6cf95a056.png?v=1776675992"],"price":720.49,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:44.075Z"},"share_url":"https://firestarter.network/l/lst_QSZVTErm","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_QSZVTErm' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy FiiO M33 R2R' and a budget_max comfortably above $720.49 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."]}}