{"type":"firestarter.listing","listing":{"id":"lst_2aWAxEWw","product_name":"Apos TOPPING-90 Ensemble","category":"Apos Ensemble","description":"Ensemble, assemble!\nApos Ensembles are like the Avengers of audio gear—bundles assembled by our team  to save your ears from the forces of mediocre sound. Every piece of equipment plays its part to deliver an unbeatable listening experience: a DAC to decode the 1s and 0s, an amp to power up the audio, and all the interconnections necessary to bring the team together.\nMeet the TOPPING-90 Series Ensemble\nThe Apos TOPPING-90 Ensemble is a bundle designed to provide you with a premium audio setup straight out of the box. \nFor the DAC, you have two choices. Option 1 is the TOPPING D90 III Sabre Fully-Balanced HIFI DAC, featuring dual ES9039SPRO DAC chips for exceptional audio performance with 135dB SNR and &lt;0.000045% THD+N. It includes advanced CPLD processing for minimal jitter, Bluetooth 5.1 for high-resolution wireless audio, and versatile output modes with both XLR and RCA options. \nOption 2 is the TOPPING D90 III Discrete DAC, featuring a fully discrete 1-bit PSRM DAC architecture for unparalleled precision with 131dB SNR and &lt;0.00006% THD+N. It includes ultra-low jitter (-157 dB), Bluetooth 5.1 with LDAC for high-resolution wireless audio, and versatile output options with both XLR and RCA connections.\nFor the amp, you'll receive the TOPPING A90 Discrete Headphone Amp, featuring an NFCA module with a powerful output of 9800mW x2. It supports both balanced and single-ended headphones with outputs including 4-pin XLR, 4.4 balanced, and 6.35mm SE. The amp also includes features like an R2R volume control, ground loop noise terminator, and a 12V trigger interface for seamless integration with either DAC. \nProducts in this bundle\nTOPPING D90 III DAC\n\nDual ES9039SPRO chips for superior audio quality\nAdvanced CPLD processing for minimal jitter\nInnovative I/V conversion circuit for clarity\nAuthentic sound reproduction with ultra-low THD+N\nHigh-resolution wireless audio with Bluetooth 5.1\nUniversal compatibility for easy setup\nVersatile output modes with XLR and RCA o","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-apos-ensemble-apos-topping-90-ensemble-1150740647.jpg?v=1742646782","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-apos-ensemble-apos-topping-90-ensemble-42409470099692.png?v=1742574813"],"price":1509.99,"currency":"USD","in_stock":true,"inventory_qty":79992,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:00.793Z"},"share_url":"https://firestarter.network/l/lst_2aWAxEWw","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_2aWAxEWw' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Apos TOPPING-90 Ensemble' and a budget_max comfortably above $1509.99 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."]}}