{"type":"firestarter.listing","listing":{"id":"lst_DTrQng_Y","product_name":"Siemens E88CC (6922) Vacuum Tube","category":"Vacuum Tube","description":"The Siemens E88CC / 6922 is a premium high-spec double triode known for exceptional reliability, low noise, and outstanding linearity. These German-made versions feature gold pins, grey plates, and a top ring getter, making them highly desirable for high-end audio, preamps, DACs, and precision instrumentation. Their robust design ensures stable performance and long service life.\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: Siemens E88CC / 6922 / ECC88 / 6DJ8 / 6922 / 7308 / E188CC \n\nGetter Type: Top Ring Getter\n\nPlate Type: Gray Plate\n\nPin Type: Gold Pins\n\nMade in: Germany\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-siemens-e88cc-6922-vacuum-tube-1220503297.jpg?v=1771370468","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503296.jpg?v=1771368491","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503295.jpg?v=1771368548","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503298.jpg?v=1771368371","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503299.jpg?v=1771368427","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503300.jpg?v=1771368308","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503302.jpg?v=1771368249","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503303.jpg?v=1771368133","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503301.jpg?v=1771368188","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-siemens-e88cc-6922-vacuum-tube-1220503268.png?v=1771368009"],"price":520,"currency":"USD","in_stock":true,"inventory_qty":89991,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:56.008Z"},"share_url":"https://firestarter.network/l/lst_DTrQng_Y","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_DTrQng_Y' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Siemens E88CC (6922) Vacuum Tube' and a budget_max comfortably above $520.00 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."]}}