{"type":"firestarter.listing","listing":{"id":"lst_v7hNexAl","product_name":"Archive Tubes 6H5C (6AS7G) Vacuum Tube","category":"Vacuum Tube","description":"The 6H5C (6AS7G) was produced in the USSR as a state-manufactured component rather than a branded commercial product. These tubes are effectively unbranded, identified only by type codes, factory marks, and date stamps. Internally, they’re rugged dual triodes with dual plate getters, designed for long service life and stable, predictable operation, qualities that translate well to hi-fi and OTL-style amplifier circuits. Every tube is fully tested and matched on an Amplitrex AT1000 to confirm electrical health and balance before shipment.\nArchive Assessed, Apos Assured\nAll Archive tubes are thoroughly tested, inspected, photographed, and inventoried, guaranteeing the quality of each tube that's shipped to customers. All tubes carry an Apos 12-month warranty against manufacturing defects.\nAre the tubes...dusty...?\nBecause these are genuine New Old Stock tubes, small cosmetic irregularities may be present. These aren't defects but artifacts of vintage manufacturing and decades of storage. They have no impact on reliability or sonic performance.\nSpecs\n\n\nBrand / Type: Russian 6H5C / 6N5S / A8134 / 6080 / 6AS7G / 6336 / 6528\n\nGetter Type: Dual Plate Getter\n\nGrade: Military Grade\n\nMade in: USSR\n\nBox Type: NOS in Original Box\n\nTested on: Amplitrex AT1000 Advanced Digital Tube Tested\n","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497186.jpg?v=1771371847","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497189.jpg?v=1771371788","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497187.jpg?v=1771371728","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497191.jpg?v=1771371668","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497192.jpg?v=1771371610","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497190.jpg?v=1771371548","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497188.jpg?v=1771371490","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1218497193.jpg?v=1771371428","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-archive-tubes-6h5c-6as7g-vacuum-tube-1220503276.png?v=1771366808"],"price":160,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:55.987Z"},"share_url":"https://firestarter.network/l/lst_v7hNexAl","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_v7hNexAl' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Archive Tubes 6H5C (6AS7G) Vacuum Tube' and a budget_max comfortably above $160.00 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."]}}