{"type":"firestarter.listing","listing":{"id":"lst_QtRH9XZN","product_name":"FiiO K13 R2R Desktop DAC & Headphone Amplifier","category":"DAC / AMP","description":"Features:-\n\n>High-Performance Desktop DAC/AMP.\n\n>Fully-Differential True 24-Bit R2R DAC Setup.\n\n>NOS/OS Dual-Operating Modes.\n\n>Fully-Balanced Audio Amplification Circuit.\n\n>XLR+RCA Pre-amp/Line-Out Functionality.\n\n>Powerful 2400mW+2400mW Headphone Output.\n\n>Three-Level Gain Adjustment.\n\n>High-Resolution Bluetooth V5.4 Connectivity.\n\n>High-Definition LDAC Transmission Support.\n\n>DC/AC Dual-Power Supply Design.\n\n>10-Band High-Precision PEQ Functionality.\n\n>ELNA RA3 Audiophile-Grade Electrolytic Capacitors.\n\n>Top-Quality LCD Display Screen.\n\n>Minimalistic Look with a brand-new “Skylight” Design.\n\n>Dual-Knob Control.\n\n>FiiO Control Media Application.\n\n>Overheating and Overload Protection.\n\n>Adjustable RGB Lighting.\n\nFiiO welcomes the all-new K13 R2R desktop DAC and Headphone amplifier. This little beast of a device packs serious performance with a fully-differential true 24-bit R2R resistor array DAC setup and a powerful, fully-balanced amp section that produces a thunderous 2.4W output per channel. Equipped with an advanced XMOS USB processor, the K13 supports up to 32bit/384kHz PCM and native DSD256 audio signals. It supports USB, Coaxial, Optical, and Bluetooth connections for input. FiiO K13 adopts a specially-designed DC/AC dual power supply design, which provides clean power input with anti-interference capabilities. FiiO K13 has a clean, minimalistic design featuring an unibody aluminium alloy casing, and a brand-new “Skylight” design where FiiO has featured a circular glass window on the top. Through this glass window, the internal R2R DAC array is visible. The K13 is a special DAC/AMP with a special sound profile; its fully-differential R2R array, along with a high-power amp setup, promises a quality music listening experience for its users. Experience true high-fidelity with the FiiO K13 as your desktop companion!!\n\nFully-Differential True 24-Bit R2R DAC Setup:-\n\nFiiO K13’s special sauce is its high-perfor","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k13-r2r-desktop-dac-headphone-amplifier-fiio-k13-r2r-black-us-461188.webp?v=1758006319","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k13-r2r-desktop-dac-headphone-amplifier-fiio-363282.webp?v=1758006348","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k13-r2r-desktop-dac-headphone-amplifier-fiio-603414.webp?v=1758006363","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k13-r2r-desktop-dac-headphone-amplifier-fiio-163537.webp?v=1758006328","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k13-r2r-desktop-dac-headphone-amplifier-fiio-371030.webp?v=1758006325","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/fiio-k13-r2r-desktop-dac-headphone-amplifier-fiio-k13-r2r-silver-us-347154.webp?v=1758006317"],"price":319.99,"currency":"USD","in_stock":true,"inventory_qty":79992,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:28.744Z"},"share_url":"https://firestarter.network/l/lst_QtRH9XZN","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_QtRH9XZN' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy FiiO K13 R2R Desktop DAC & Headphone Amplifier' and a budget_max comfortably above $319.99 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."]}}