{"type":"firestarter.listing","listing":{"id":"lst_yD72IAI9","product_name":"SONCOZ QXA1","category":"AMP & DAC","description":"\n  \n\n  \n\n Multi-function Knob Button \n\n  \n\n SGA1 has one multi-function knob button which integrates all the functions and operations. Operation mode include one press, two consecutive press, long press and slow and fast left or right rotation.  \n\nHow to select XLR input: \n\nPress the knob once and rotate it left or right until the “IN” indicator flashes, press the knob again and rotate it left or right until the “XLR icon” flashes, then press again and the XLR input setup is completed. \n\n \n\n \n\n   \n\n  \n\n \n\n\n  \n\n  \n\n Volume and Gain Adjustment \n\n \n\n  \n\n SGA1 integrates MUSES 72320 electronic volume which performs low noise and low distortion characteristics and with resistance ladder circuit. Based on MUSES 72320 electronic gain characteristic, the gain adjustment range is software-limited based on the output(HPA/PRE) without distortion.The volume and gain value of each combination of input and output can be memorized independently and won’t be lost when the power goes down. \n\n \n\n \n\n   \n\n  \n\n \n\n\n  \n\n  \n\n Customized  Toroidal Transformer \n\n   \n\n  \n\nThe SGA1 is powered by a custom toroidal transformer containing multiple layers of permalloy shielding. Thanks to the permalloy shielding layer, the 50/60Hz power frequency noise and its harmonics are significantly reduced. \n\n \n\n   \n\n  \n\n \n\n\n  \n\n  \n\n  \n\nExcellent PCB Design &amp; Optimized Cooling System \n\n   \n\n The main board is designed with 4 layers of chemical precipitation gold PCB, and its stack up is GND-SIGNAL-POWER-GND. It can be seen that the signal and power supply are concentrated in the inner layer, and the surface layer is the shield GND plane layer. This design improves the anti-interference ability of the audio signal. Vias in SMD pad design optimizes the filter radius of the capacitors and also greatly reduces the antenna effect caused by stub routing.  \n\nCompared with SGD1, SGA1 optimized the heat dissipation system, increase the heat dissipation hole slot and adjust its position, which is not only conduciv","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/products/SoncozQXA1-1-1000.jpg?v=1641464831","https://cdn.shopify.com/s/files/1/0040/7201/3924/products/SoncozQXA1-6-1000.jpg?v=1641464830","https://cdn.shopify.com/s/files/1/0040/7201/3924/products/SoncozQXA1-2-1000.jpg?v=1641464830","https://cdn.shopify.com/s/files/1/0040/7201/3924/products/SoncozQXA1-3-1000.jpg?v=1641464830","https://cdn.shopify.com/s/files/1/0040/7201/3924/products/SoncozQXA1-4-1000.jpg?v=1641464831","https://cdn.shopify.com/s/files/1/0040/7201/3924/products/SoncozQXA1-5-1000.jpg?v=1641464831"],"price":269.99,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:47.612Z"},"share_url":"https://firestarter.network/l/lst_yD72IAI9","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_yD72IAI9' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy SONCOZ QXA1' and a budget_max comfortably above $269.99 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."]}}