{"type":"firestarter.listing","listing":{"id":"lst_ESRfE6B1","product_name":"Soncoz SGA1 Headphone AMP & Pre-AMP","category":null,"description":"\n\nFeatures:-\n>Ultra-Low Noise OP-AMPs.\n>High-quality components such as Large Capacity Capacitors, Signal Coupling Capacitors, and more.\n>Customised Toroidal Transformer.\n>MUSES 72320 Electronic Volume Chip.\n>Volume & Gain Adjustment.\n>Memory Function that memories the volume and gain value of each combination of input and output.\n>Multi-Function Knob-Button.\n>Shielding Baffle And Shield to separate the high-voltage and low-voltage circuits.\n>Excellent PCB Design.\n>OLED Display.\nHeadphone Amplifier Parameters(SE):-\n>THD+N: <117dB.\n>Frequency Response Range: 20Hz-20kHz.\n>Dynamic Range: <124dB.\n>Signal To Noise Ratio: <92dB.\n>Crosstalk: <118dB.\n>Output Voltage: 4.0Vrms.\n>Output Impedance: 0.1 ohm.\n>Noise: 1.8uVrms.\n>Output Power: Up to 420mW @33 ohm, up to 210mW @300 ohm, up to 105mW @600ohm.\nHeadphone Amplifier Parameters(Balanced):-\n>THD+N: <118dB.\n>Frequency: 20Hz-20kHz.\n>Dynamic Range: <126dB.\n>Signal To Noise Ratio: <91dB.\n>Crosstalk: <120dB.\n>Output Voltage: 7.8Vrms.\n>Output Impedance: 0.05 ohm.\n>Noise: 3.6uVrms.\n>Output Power: Up to 420mW @33 ohm, up to 840mW @300ohm, up to 420mW @600ohm.\nPre-Output Parameters(RCA):-\n>THD+N: <117dB.\n>Frequency Response Range: 20Hz-20kHz.\n>Dynamic Range: <126dB.\n>Signal To Noise Ratio: <95dB.\n>Crosstalk: <132dB.\n>Output Voltage: 2.0Vrms.\n>Output Impedance: 100ohm.\n>Noise: 1.5uVrms.\nPre-Output Parameters(XLR):-\n>THD+N: <118dB.\n>Frequency Response Range: 20Hz-20kHz.\n>Dynamic Range: <126dB.\n>Signal To Noise Ratio: <94dB.\n>Crosstalk: <136dB.\n>Output Voltage: 4.0Vrms.\n>Output Impedance: 200ohm.\n>Noise: 3.0uVrms.\nSoncoz SGA1 is a High-Fidelity fully balanced headphone amplifier and pre-amplifier that is designed with high-quality components to ensure high-quality performance. It features a fully balanced architecture with XLR input/pre-out and 4-pin XLR+","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-205610.jpg?v=1668185952","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-304562.jpg?v=1668187464","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-758224.jpg?v=1668186235","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-black-397563.jpg?v=1668187236","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-994103.jpg?v=1668184470","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-608163.jpg?v=1668185702","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-796453.jpg?v=1668184850","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-991461.jpg?v=1668185369","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-847710.jpg?v=1668186960","https://cdn.shopify.com/s/files/1/0031/0453/8673/products/soncoz-sga1-headphone-amp-pre-amp-hifigo-243153.jpg?v=1668184324"],"price":649.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:31.381Z"},"share_url":"https://firestarter.network/l/lst_ESRfE6B1","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 ","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_ESRfE6B1' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Soncoz SGA1 Headphone AMP & Pre-AMP' and a budget_max comfortably above $649.99 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."]}}