{"type":"firestarter.listing","listing":{"id":"lst_d4wXd51F","product_name":"SMSL PH-1 MM Phono Amp","category":"Headphone DAC/Amp","description":"\nPerformance, price, and simplicity\n\nThe SMSL PH-1 isn’t trying to be everything for everyone. It’s a phono amp built solely for moving magnet (MM) cartridges. By skipping moving coil support entirely, SMSL was able to simplify the circuit, lower the cost, and improve performance across the board. No relay switching. No compromise in headroom. Just a clean, solid phono stage built for a fraction of the cost of typical phono amps. Add a milled aluminum chassis, an integrated headphone amp, and a tuned 46dB gain stage, and you’ve got a true hi-fi component.\nMore volume, less compromise\nMost phono amps hover around 38–40dB of gain. Not the PH-1. After testing MM cartridges ranging from budget-friendly to boutique, SMSL landed on a fixed 46dB gain—enough to bring your signal to around 1Vrms. This gives you a fuller, more dynamic signal that meets the demands of modern amplifiers without overdriving them.\n\nMM only—on purpose\n\nNo switches. No MC circuit. The PH-1 is optimized exclusively for MM cartridges, which make up the overwhelming majority of what vinyl listeners use. By dropping MC support, SMSL was able to streamline the signal path and boost performance, achieving 50% better circuit metrics. \n\nCompact, solid, and ready for real systems\n\nThe PH-1 is carved from high-precision aluminum, giving it the mechanical strength and EMI resistance needed for analog playback. It’s compact—just 3.7 x 3.7 x 1.2” (94 x 96 x 30mm)—but still offers RCA jacks, USB power, a ground post, and a 6.35mm headphone output, all laid out with enough spacing to keep cable management painless. \n\nPrivate listening, built in\n\nSometimes you don’t want to fire up the speakers. That’s why the PH-1 includes a dedicated 6.35mm headphone amp with front-panel volume control. It also works great as a preamp for active speakers, giving you front-stage volume control without needing another box in the chain.\n\nClean power, clean signal\n\nThe PH-1 keeps noise out of the equation with an isolated dual power","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596516.png?v=1748017720","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596514.png?v=1748017494","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596519.png?v=1748017729","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596517.png?v=1748017723","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596515.png?v=1748017497","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596518.png?v=1748017725","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596509.png?v=1748017479","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596513.png?v=1748017491","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596511.png?v=1748017485","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596510.png?v=1748017482","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-smsl-headphone-dac-amp-smsl-ph-1-mm-phono-amp-1169596512.png?v=1748017489"],"price":69.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:57.633Z"},"share_url":"https://firestarter.network/l/lst_d4wXd51F","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_d4wXd51F' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy SMSL PH-1 MM Phono Amp' and a budget_max comfortably above $69.99 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."]}}