{"type":"firestarter.listing","listing":{"id":"lst_A51ivhN8","product_name":"Questyle QP2R High-Res Lossless Digital Audio Player Portable DAP","category":null,"description":"Specifications\n\n- Patented fully discrete/full-balanced/Current Mode AMP\n- Pure Class A BIAS control system\n\nAudio Formats Supported: WAV, FLAC, WMA, MP3, OGG, AAC, ALAC,AIFF, DFF, DSF，APE(Normal/High/Fast)\n\nSample Rate\nPCM 32kHz - 384kHz (16/24/32Bit)\nDSD Native: DSD64(1Bit 2.8MHz),\nDSD128(1Bit 5.6MHz), DSD256(1Bit 11.2MHz)\nDAC   AKM AK4490 DAC chip\nOutputs: Headphone out(3.5mm)/Optical out(3.5mm)/Balanced out(2.5mm)\nOutput Level: Unbalanced 1.6 Vrms / Balanced 3.2 Vrms\n\nOutput Power\nUnbalanced    RL=32Ω，Pout=38mW; RL=300Ω， Pout=9mW\nBalanced     RL=32Ω，Pout=70mW; RL=300Ω， Pout=38Mw\nFrequency Response  ±0.1dB (20Hz-20kHz)\nS/N    100dB @ 1kHz, Unbalanced / 102dB @ 1kHz, Balanced\nTHD+N    0.0006% @ 1kHz, Unbalanced / 0.0005% @ 1kHz, Balanced\nOutput Impedance:0.1Ω\nCharging &amp; Data Transfer: Type-C , 5V 2A (PC &amp; MAC)\nPC OS Requirements: Windows XP / Windows 7&amp;8(32/64bit) / Mac OS X 10.7 or later\nMemory   Internal: 64GB; \nExternal: Micro SD card (Max. 200GB) x 1\nBattery: 3,100mAh 3.7V Li-Polymer battery, 10 hours of battery life\nDisplay: IPS 2.4inch (Sharp LCM)\nOperating System: Linux\nBody Material: CNC machining aluminum, available in Gold/Space Gray\nDimension: 65[W] x 134[H] x 14.5[D] (mm)\n ","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/products/questyle-qp2r-high-res-lossless-digital-audio-player-portable-dap-hifigo-546252.jpg?v=1591760798","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/questyle-qp2r-high-res-lossless-digital-audio-player-portable-dap-hifigo-742978.jpg?v=1591760824","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/questyle-qp2r-high-res-lossless-digital-audio-player-portable-dap-hifigo-971178.jpg?v=1591760841","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/questyle-qp2r-high-res-lossless-digital-audio-player-portable-dap-hifigo-746220.jpg?v=1591760809"],"price":1399,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:31.600Z"},"share_url":"https://firestarter.network/l/lst_A51ivhN8","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_A51ivhN8' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Questyle QP2R High-Res Lossless Digital Audio Player Portable DAP' and a budget_max comfortably above $1399.00 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."]}}