{"product_id":"best-pair-8417-sylvania-branded-rca-nos-1970s-128ma-and-131ma","title":"(!!!) (Best Pair) 8417 Sylvania branded RCA NOS 1970's (128ma and 131ma)","description":"\u003cp\u003e1 pair) 8417 Sylvania branded RCA NOS 1970's top and side getters - 1 tube has faded printing\u003c\/p\u003e\n\u003cp\u003e1 tube) faded printing  - on left\u003c\/p\u003e\n\u003cp\u003eMa plate=128ma\u003c\/p\u003e\n\u003cp\u003eMa screen=5.5ma\u003c\/p\u003e\n\u003cp\u003eGm=25,500\u003c\/p\u003e\n\u003cp\u003e1 tube) \u003c\/p\u003e\n\u003cp\u003eMa plate=131ma\u003c\/p\u003e\n\u003cp\u003eMa screen=5.0ma\u003c\/p\u003e\n\u003cp\u003eGm=24,500\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex:\u003c\/p\u003e\n\u003cp\u003eVplate=300V\u003c\/p\u003e\n\u003cp\u003eVscreen=300V\u003c\/p\u003e\n\u003cp\u003eVgrid=-12V\u003c\/p\u003e\n\u003cp\u003eGood NOS Ma range 85-100ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 21,000-23,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFor:\u003c\/p\u003e\n\u003cp\u003e- UFO\u003c\/p\u003e\n\u003cp\u003e- Fisher SA-1000\u003c\/p\u003e\n\u003cp\u003e- Dynaco\u003c\/p\u003e\n\u003cp\u003e- Quicksilver\u003c\/p\u003e\n\u003cp\u003e- Dynaco Mark VI introduced in 1976\u003c\/p\u003e\n\u003cp\u003e- Gibson\u003c\/p\u003e\n\u003cp\u003e- Bogen\u003c\/p\u003e\n\u003cp\u003e- Harmon Kardon\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"8417 Sylvania NOS Pair","offer_id":67701750956284,"sku":"8417pair","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/6_0a3c9390-a9e2-404b-ac1b-b6113f858654.jpg?v=1791961107","url":"https:\/\/tubeworldexpress.com\/products\/best-pair-8417-sylvania-branded-rca-nos-1970s-128ma-and-131ma","provider":"Tube World Express","version":"1.0","type":"link"}