{"product_id":"archive-tubes-rca-od3-vt139-vr150-vacuum-tube","title":"RCA OD3\/ VT139\/ VR150 Vacuum Tube","description":"\u003cp\u003eRCA produced this VT-139 \/ VR-150 \/ OD3 voltage regulator tube in the United States. Developed for industrial and communications equipment, this gas-filled regulator type helped maintain consistent operating voltages in tube-era power supplies. It features a black base, standard octal construction, and the characteristic internal electrode structure used in cold-cathode voltage regulator tubes.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eArchive Assessed, Apos Assured\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAll 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.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAre the tubes...dusty...?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBecause 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.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \/ Type:\u003c\/strong\u003e RCA OD3 \/ VT139 \/ VR150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGetter Type:\u003c\/strong\u003e Bottom Double \"D\" Getter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Type:\u003c\/strong\u003e Black Base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox Type:\u003c\/strong\u003e NOS in Original Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested on:\u003c\/strong\u003e Amplitrex AT1000 Advanced Digital Tube Tester\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Archive Tubes","offers":[{"title":"Matched Pair (2 Tubes) \/ Archive Vault","offer_id":47746592407788,"sku":"APS-1365-1","price":175.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 Tubes) \/ Gold","offer_id":47746592440556,"sku":"APS-1365-2","price":161.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 Tubes) \/ Silver","offer_id":47746592473324,"sku":"APS-1365-3","price":152.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 Tubes) \/ Archive Vault","offer_id":47746592506092,"sku":"APS-1365-4","price":350.0,"currency_code":"USD","in_stock":false},{"title":"Matched Quad (4 Tubes) \/ Gold","offer_id":47746592538860,"sku":"APS-1365-5","price":323.0,"currency_code":"USD","in_stock":false},{"title":"Matched Quad (4 Tubes) \/ Silver","offer_id":47746592571628,"sku":"APS-1365-6","price":305.0,"currency_code":"USD","in_stock":false},{"title":"Singles  (1 Tube) \/ Archive Vault","offer_id":47746592604396,"sku":"APS-1365-7","price":77.0,"currency_code":"USD","in_stock":true},{"title":"Singles  (1 Tube) \/ Gold","offer_id":47746592637164,"sku":"APS-1365-8","price":70.0,"currency_code":"USD","in_stock":true},{"title":"Singles  (1 Tube) \/ Silver","offer_id":47746592669932,"sku":"APS-1365-9","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/RCAOD3_2.jpg?v=1783958230","url":"https:\/\/apos.audio\/products\/archive-tubes-rca-od3-vt139-vr150-vacuum-tube","provider":"Apos","version":"1.0","type":"link"}