{"type":"firestarter.listing","listing":{"id":"lst_tqpxDitN","product_name":"Mullard CV4108/ ECC88/ 7308 Vacuum Tube","category":"Vacuum Tube","description":"Mullard CV4108 vacuum tubes were manufactured in England as a high-reliability, special-quality version of the E188CC/7308, intended for professional and communications applications. These tubes feature gold-plated pins and solid disc getter construction, along with the low-noise, tightly controlled internal design characteristics that distinguish the 7308 from standard ECC88-family types.\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: Mullard CV4108 / 7308 / ECC88\n\nGetter Type: Solid Disc Getter\n\nPin Type: Gold Pins\n\nMade in: England\n\nBox Type: NOS in New Box\n\nTested on: Amplitrex AT1000 Advanced Digital Tube Tester\n","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/MULLARDCV4108_3.jpg?v=1783958052","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/MULLARDCV4108_1.jpg?v=1783958052","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/MULLARDCV4108_4.jpg?v=1783958052","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/MULLARDCV4108_2.jpg?v=1783958052","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/MULLARDCV4108_5.jpg?v=1783958052"],"price":620,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-07-14T19:44:25.335Z"},"share_url":"https://firestarter.network/l/lst_tqpxDitN","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_tqpxDitN' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Mullard CV4108/ ECC88/ 7308 Vacuum Tube' and a budget_max comfortably above $620.00 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."]}}