{"product_id":"6sn7-gtb-nos-nib-rca-black-plates-halo-getter-tested-tube-made-in-usa-70","title":"6SN7GTB NOS NIB RCA – Black Plates Halo Getter Tested Tube USA 1970","description":"\u003cp\u003e\u003cstrong\u003e6SN7 GTB NOS NIB RCA Black Plates Halo Getter Tested Tube Made in USA '70\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"32\" data-end=\"529\"\u003eThe \u003cstrong data-start=\"35\" data-end=\"64\"\u003e6SN7 GTB RCA Black Plates\u003c\/strong\u003e , with \u003cstrong data-start=\"70\" data-end=\"85\"\u003eHalo Getter\u003c\/strong\u003e , produced in the \u003cstrong data-start=\"102\" data-end=\"126\"\u003eUSA in 1970\u003c\/strong\u003e , are an excellent choice for those looking for a preamp tube with a \u003cstrong data-start=\"216\" data-end=\"300\"\u003ebalanced tone, natural dynamic performance and great sonic transparency\u003c\/strong\u003e . The combination of \u003cstrong data-start=\"321\" data-end=\"337\"\u003eBlack Plates\u003c\/strong\u003e and \u003cstrong data-start=\"340\" data-end=\"355\"\u003eHalo Getter\u003c\/strong\u003e contributes to a \u003cstrong data-start=\"388\" data-end=\"425\"\u003edetailed and harmonically rich\u003c\/strong\u003e reproduction, making them ideal for both \u003cstrong data-start=\"453\" data-end=\"526\"\u003ehi-fi preamps and high-end tube amplifiers\u003c\/strong\u003e .\u003c\/p\u003e\n\u003cul data-start=\"531\" data-end=\"1528\"\u003e\n\u003cli data-start=\"531\" data-end=\"733\"\u003e\u003cstrong data-start=\"533\" data-end=\"542\"\u003eBass\u003c\/strong\u003e : \u003cstrong data-start=\"544\" data-end=\"580\"\u003eTight, well controlled and defined\u003c\/strong\u003e , with a \u003cstrong data-start=\"599\" data-end=\"633\"\u003edynamic response and no bloating\u003c\/strong\u003e . The low range is \u003cstrong data-start=\"652\" data-end=\"673\"\u003esolid and present\u003c\/strong\u003e , ensuring a \u003cstrong data-start=\"695\" data-end=\"716\"\u003estable and precise\u003c\/strong\u003e sound without excesses.\u003c\/li\u003e\n\u003cli data-start=\"734\" data-end=\"951\"\u003e\u003cstrong data-start=\"736\" data-end=\"744\"\u003eMids\u003c\/strong\u003e : \u003cstrong data-start=\"746\" data-end=\"786\"\u003eFluid, natural and slightly warm\u003c\/strong\u003e , with excellent instrumental separation. Voices emerge with \u003cstrong data-start=\"852\" data-end=\"895\"\u003eexcellent depth and transparency\u003c\/strong\u003e , ensuring \u003cstrong data-start=\"919\" data-end=\"948\"\u003eimmersive and realistic\u003c\/strong\u003e listening.\u003c\/li\u003e\n\u003cli data-start=\"952\" data-end=\"1128\"\u003e\u003cstrong data-start=\"954\" data-end=\"962\"\u003eHighs\u003c\/strong\u003e : \u003cstrong data-start=\"964\" data-end=\"995\"\u003eAiry, silky and well extended\u003c\/strong\u003e , with a \u003cstrong data-start=\"1010\" data-end=\"1032\"\u003eclear and refined\u003c\/strong\u003e rendering. The detail is always \u003cstrong data-start=\"1056\" data-end=\"1088\"\u003emusical and free from harshness\u003c\/strong\u003e , avoiding any listening fatigue.\u003c\/li\u003e\n\u003cli data-start=\"1129\" data-end=\"1344\"\u003e\u003cstrong data-start=\"1131\" data-end=\"1143\"\u003eDynamics\u003c\/strong\u003e : \u003cstrong data-start=\"1145\" data-end=\"1174\"\u003eNatural and well-balanced\u003c\/strong\u003e , with a \u003cstrong data-start=\"1207\" data-end=\"1227\"\u003efast and precise\u003c\/strong\u003e transient response that delivers a \u003cstrong data-start=\"1260\" data-end=\"1284\"\u003elively and expressive\u003c\/strong\u003e sound, perfect for capturing the subtlest musical nuances.\u003c\/li\u003e\n\u003cli data-start=\"1345\" data-end=\"1528\"\u003e\u003cstrong data-start=\"1347\" data-end=\"1361\"\u003eSoundstage\u003c\/strong\u003e : \u003cstrong data-start=\"1363\" data-end=\"1384\"\u003eWide and immersive\u003c\/strong\u003e , with excellent instrument separation and a spatial presentation that gives \u003cstrong data-start=\"1473\" data-end=\"1525\"\u003edepth and three-dimensionality to the soundstage\u003c\/strong\u003e .\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1530\" data-end=\"1966\"\u003eThanks to their \u003cstrong data-start=\"1547\" data-end=\"1612\"\u003erobust construction and careful selection by RCA\u003c\/strong\u003e , the \u003cstrong data-start=\"1617\" data-end=\"1642\"\u003e6SN7 GTB Black Plates\u003c\/strong\u003e from the 70s guarantee \u003cstrong data-start=\"1671\" data-end=\"1730\"\u003elow microphonics, operational stability and long life\u003c\/strong\u003e , making them perfect for \u003cstrong data-start=\"1756\" data-end=\"1810\"\u003edemanding audiophiles and high-end hi-fi systems\u003c\/strong\u003e . Their \u003cstrong data-start=\"1820\" data-end=\"1864\"\u003ewarm, detailed and balanced tone\u003c\/strong\u003e makes them an excellent choice for those who want \u003cstrong data-start=\"1917\" data-end=\"1963\"\u003eprecise and enveloping musical reproduction\u003c\/strong\u003e .\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValve tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e \u003cspan\u003eVa = 250V ; Vg = -8V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e \u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eGm = 2600 ; Ia = 9 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm = 2700 ; Ia = 8.4 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm = 2800 ; Ia = 8.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Standard – Tested and approved for use in hi-fi systems and guitar amplifiers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – Very strong and stable output, no fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - NIB - New Old Stock, New In Box - Tested and working - In original box.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e Excellent – Perfectly preserved writing, minimal signs of wear. See photos.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e DD - Manufactured by RCA in November 1970\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Why our tubes are different – the VTT protocol that improves sound, reliability and durability\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":54065838817628,"sku":"02792","price":4200.0,"currency_code":"ALL","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_3e52bb98-2e57-4ff6-bf87-19bbe9546fd1.jpg?v=1740738117","url":"https:\/\/vacuumtubestreasures.com\/en-al\/products\/6sn7-gtb-nos-nib-rca-black-plates-halo-getter-tested-tube-made-in-usa-70","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}