{"type":"firestarter.listing","listing":{"id":"lst_Sg1B3DbT","product_name":"GEC CV6 (2C22/ 6C8C) Vacuum Tube","category":"Vacuum Tube","description":"The CV6 GEC is a 1930s vintage military grade 2C22/ VR135 / DET20, which is equivalent to 6J5 and half of 6SN7. When two tubes are used with a converter adapter, they work as a single 6SN7. The VR135 is a military receiving valve that became reclassified as the CV6 when the common valve listings were drawn-up to remove the problems of a lack of interchange between the UK Armed Forces.\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.\nCV6 to 6SN7 Adapter Add-on\nHigh-quality adapter allowing 2C22 / 7193 / CV6 tubes to be used in equipment designed for 6SN7 tube sockets. Clean, reliable conversion — ideal for audio work, testing, and repairs.\nReliable pin-to-pin conversion with gold-plated contacts for improved conductivity and reduced oxidation. Designed to maintain proper alignment and stable contact in tube sockets. Suitable for audio enthusiasts and technicians who need a simple, reversible conversion solution.\nSpecs\nTube\n\n\nBrand / Type: GEC CV6 /  6J5 / 6J5G / 6J5GT / VT-94 / CV1067 / CV1135 / L63 / 7193 / CV1671 \n\nBase Type: Black Base\n\nGetter Type: Pan Getter\n\nGrade: Military Grade\n\nMade in: England\n\nTested on: Amplitrex AT1000 Advanced Digital Tube Tested\n\nAdapter\n\n\nConverts: 2C22 / 7193 / CV6 → 6SN7\n\nMaterial: Ceramic base with gold-plated pins\n\nInstallation: Plug-and-play, no soldering required\n\nUse: Amplifiers, preamps, test rigs, DIY projects\nAdapter type: 2C22 / 7193 / CV6 → 6SN7\nMaterial: Ceramic base, gold-plated pins\nInstallation: Plug-in (no soldering)\nCompatibility: Audio tube sockets using 6SN7","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1218427171.jpg?v=1771373769","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1218427167.jpg?v=1771373708","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1218427169.jpg?v=1771373648","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1218427170.jpg?v=1771373587","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1218427172.jpg?v=1771373528","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1218427168.jpg?v=1771373468","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1218427173.jpg?v=1771373409","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1220503282.jpg?v=1771367288","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1220503281.jpg?v=1771367228","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1220503280.jpg?v=1771367170","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1220503279.jpg?v=1771367108","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1220503278.jpg?v=1771367048","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-archive-tubes-vacuum-tube-gec-cv6-2c22-6c8c-vacuum-tube-1220503273.png?v=1771366988"],"price":400,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:55.994Z"},"share_url":"https://firestarter.network/l/lst_Sg1B3DbT","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_Sg1B3DbT' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy GEC CV6 (2C22/ 6C8C) Vacuum Tube' and a budget_max comfortably above $400.00 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."]}}