{"type":"firestarter.listing","listing":{"id":"lst_4FPZZDmW","product_name":"Siemens E82CC (12AU7) Vacuum Tube","category":"Vacuum Tube","description":" The Siemens E82CC (early triple-mica Siemens & Halske) is one of the most respected premium-grade 12AU7 family tubes. Known for its clarity, precision, low microphonics, and high reliability, it is a top choice for high-end preamps and phono stages.\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\nBrand / Type: Siemens E82CC / 12AU7 / ECC82 / 12AU7A / 12AU7WA / ECC802 / ECC802S / E82CC / ECC186 / 5814 / 5814A / 6189 / 6067 / CV4003/ CV491 / M8136/ B329 / 13D5 / A2293Getter type: Halo / Top Ring getterPlate type: Gray plateVersion: True early triple-mica versionTested on: Amplitrex AT1000 advanced digital tube testerWarranty: 12 months against manufacturing defects","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503286.jpg?v=1771370109","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503289.jpg?v=1771369153","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503294.jpg?v=1771369093","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503291.jpg?v=1771370168","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503292.jpg?v=1771370228","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503293.jpg?v=1771370290","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503290.jpg?v=1771370347","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503288.jpg?v=1771370408","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503287.jpg?v=1771368731","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e82cc-12au7-vacuum-tube-1220503266.png?v=1771368668"],"price":650,"currency":"USD","in_stock":true,"inventory_qty":89991,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:56.013Z"},"share_url":"https://firestarter.network/l/lst_4FPZZDmW","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_4FPZZDmW' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Siemens E82CC (12AU7) Vacuum Tube' and a budget_max comfortably above $650.00 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."]}}