{"type":"firestarter.listing","listing":{"id":"lst_Uz_ZWP1u","product_name":"Apos TOPPING-70 Ensemble","category":"Apos Ensemble","description":"Ensemble, assemble!\nApos Ensembles are the Avengers of audio gear—bundles assembled by our team of audio dorks to save your ears from the forces of mediocre sound. Each bundle is like a squad of supers, with every piece of equipment playing 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-70 Ensemble\nThe Apos TOPPING-70 Ensemble is a bundle designed to provide you with a premium audio setup straight out of the box. At the heart of this ensemble are the TOPPING E70 DAC and the TOPPING L70 Amp or PA7 Plus Power Amplifier—a dynamic duo that's essentially the Ensemble’s very own Iron Man and Captain America.\nThe TOPPING E70 VELVET Desktop DAC uses the flagship AK4499EX DAC chip for high-fidelity audio, supporting Bluetooth 5.1 with LDAC and various high-res codecs. It offers versatile connectivity with USB, coaxial, and optical inputs, as well as XLR and RCA outputs for different audio setups. Additional features include a preamp mode, 12V trigger interface, and remote control for convenient operation.\nThe TOPPING L70 Headphone Amp features an NFCA module with ultra-low THD+N and a dynamic range of 146dB, providing excellent audio performance for both balanced and single-ended headphones. It offers versatile connectivity with 4-pin XLR, 4.4mm balanced, 6.35mm, and 3.5mm single-ended outputs, and includes a pre-amp mode for driving speakers. The amp also features two gain settings, volume memorization for eight outputs, and a ground loop noise terminator for a clean audio experience.\nThe TOPPING PA7 and PA7 Plus Power Amplifiers offer impressive power in a compact design, with the PA7 delivering 210W x 2 and the PA7 Plus 300W x 2 at 4Ω. Both models feature a fully balanced Class D amplifier circuit for low distortion and high clarity, with versatile input options including XLR, TRS, and RCA. They also include a 12V","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-apos-ensemble-apos-topping-70-ensemble-1150740643.jpg?v=1742646770"],"price":729.99,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:00.102Z"},"share_url":"https://firestarter.network/l/lst_Uz_ZWP1u","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_Uz_ZWP1u' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Apos TOPPING-70 Ensemble' and a budget_max comfortably above $729.99 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."]}}