{"type":"firestarter.listing","listing":{"id":"lst_PpnGoY6b","product_name":"D&A Alpha Pro Hi-Res DAC & Headphone Amp","category":"Headphone DAC/Amp","description":"Does it all, from phono to planar\nThe Alpha Pro by D&amp;A is a fully balanced DAC and headphone amp that straddles two worlds: modern digital precision and old-school analog soul. Featuring the ES9039MSPRO DAC chip, 4-channel discrete amplification, and a real analog preamp stage, it’s built for listeners who care about detail, dynamics, and driving just about any headphone. Whether you’re feeding vinyl into planar magnetics or decoding DSD512 over USB, Alpha Pro’s architecture keeps your signal clean, your volume steady, and your background silent.\nEngineered around ESS’s flagship DAC chip\nThe ES9039MSPRO is ESS’s most advanced DAC chip to date, and the Alpha Pro takes full advantage. By summing eight differential signals per channel, the SIGMA DAC topology lowers output impedance and noise, giving you deeper dynamics and cleaner transients. With MQA hardware decoding, HyperStream architecture, and a 32-bit noise-shaping engine, your digital audio gets processed at maximum clarity.\n\n4C-FBDA: Discrete power with grip\n\nThe Alpha Pro uses four fully-balanced channels of discrete transistor amplification—8 transistors per channel, 32 total. The result is 6000mW per channel into 32Ω, &lt;0.1Ω output impedance, and near-total absence of distortion (0.0001% THD). \n\nTrue preamp functionality\n\nA lot of DAC/amps slap on a volume knob and call it a day. The Alpha Pro uses the NJU72315, one of the highest-performance analog volume chips available. It retains detail at whisper levels, cuts noise, and offers a real analog volume taper—no stepping, no smearing.\nTurntables and cassette decks welcome\nConnect a phono preamp-enabled turntable or tape deck, and route your analog signal straight to your headphones.\n\nDesigned for digital, ready for everything\n\nA 16-core XMOS XU-316 chip handles USB duties, decoding PCM up to 768kHz/32bit, DSD512, and full MQA. Bluetooth 5.1 (QCC5125) supports LDAC 24bit/96kHz along with aptX HD, AAC, and SBC. There’s also coaxial and optical with a 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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_PpnGoY6b' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy D&A Alpha Pro Hi-Res DAC & Headphone Amp' and a budget_max comfortably above $699.00 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."]}}