{"product_id":"5v4g-gz32-zenith-st-shape-black-plates-bottom-foil-dimpled-getter-tested-tube-made-in-usa-50s","title":"5V4G GZ32 ZENITH ST Shape Black Plates Bottom Foil Dimpled Getter Tested Tube Made in USA '50s","description":"\u003cp\u003e\u003cstrong\u003e5V4G GZ32 ZENITH ST Shape Black Plates Bottom Foil Dimpled Getter Tested Tube Made in USA '50s\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"617\" data-start=\"209\"\u003eThe \u003cstrong data-end=\"234\" data-start=\"212\"\u003e5V4G \/ GZ32 Zenith\u003c\/strong\u003e , produced in the United States in the 50s and here proposed in the classic \u003cstrong data-end=\"335\" data-start=\"323\"\u003eST shape\u003c\/strong\u003e configuration with \u003cstrong data-end=\"356\" data-start=\"340\"\u003eblack plates\u003c\/strong\u003e , \u003cstrong data-end=\"384\" data-start=\"358\"\u003edimpled disk getter\u003c\/strong\u003e in the \u003cstrong data-end=\"411\" data-start=\"398\"\u003elower\u003c\/strong\u003e position and robust internal structure, represents one of the most musical and stable interpretations among the American rectifiers of those years, probably made by \u003cstrong data-end=\"596\" data-start=\"578\"\u003eRCA or Sylvania\u003c\/strong\u003e on behalf of Zenith.\u003c\/p\u003e\n\u003cp data-end=\"940\" data-start=\"619\"\u003ePrized for its \u003cstrong data-end=\"673\" data-start=\"641\"\u003elower dropout voltage\u003c\/strong\u003e than the 5U4G and \u003cstrong data-end=\"725\" data-start=\"702\"\u003enatural soft start\u003c\/strong\u003e , this valve is particularly suited to \u003cstrong data-end=\"828\" data-start=\"773\"\u003evalve preamplifiers, integrated amplifiers\u003c\/strong\u003e and \u003cstrong data-end=\"853\" data-start=\"831\"\u003ehi-fi driver stages\u003c\/strong\u003e which benefit from well-regulated voltage and a progressive turn-on curve.\u003c\/p\u003e\n\u003cp data-end=\"1209\" data-start=\"947\"\u003e\u003cstrong data-end=\"956\" data-start=\"947\"\u003eBass\u003c\/strong\u003e : articulated and harmonic. The low-end response is warmer and more rounded than the 5U4GB, with a less deep but more “musical” extension. Ideal for systems where \u003cstrong data-end=\"1167\" data-start=\"1142\"\u003edensity and naturalness\u003c\/strong\u003e are sought rather than impact and rigid control.\u003c\/p\u003e\n\u003cp data-end=\"1470\" data-start=\"1211\"\u003e\u003cstrong data-end=\"1219\" data-start=\"1211\"\u003eMids\u003c\/strong\u003e : sweet and harmonious. The timbral heart of this valve lies in the mid frequencies, which are \u003cstrong data-end=\"1355\" data-start=\"1321\"\u003evelvety, organic and light\u003c\/strong\u003e , with a particularly fascinating vocal performance. Perfect for jazz, classical chamber and acoustic reproductions.\u003c\/p\u003e\n\u003cp data-end=\"1726\" data-start=\"1472\"\u003e\u003cstrong data-end=\"1480\" data-start=\"1472\"\u003eHighs\u003c\/strong\u003e : silky and delicate. The high end of the spectrum develops gracefully, without forcing. The detail is present but never aggressive, with a \u003cstrong data-end=\"1634\" data-start=\"1620\"\u003efine grain\u003c\/strong\u003e that enhances the micro-information and contributes to a refined and non-tiring listening experience.\u003c\/p\u003e\n\u003cp data-end=\"1999\" data-start=\"1728\"\u003e\u003cstrong data-end=\"1740\" data-start=\"1728\"\u003eDynamics\u003c\/strong\u003e : smooth but coherent. The dynamic behavior is more “elastic” than low internal resistance rectifiers like the GZ34, but for this reason it is more musical in low power systems, with a \u003cstrong data-end=\"1998\" data-start=\"1952\"\u003esmooth transition between energy levels\u003c\/strong\u003e .\u003c\/p\u003e\n\u003cp data-end=\"2217\" data-start=\"2001\"\u003e\u003cstrong data-end=\"2015\" data-start=\"2001\"\u003eSoundstage\u003c\/strong\u003e : wide and enveloping. The soundstage develops with \u003cstrong data-end=\"2103\" data-start=\"2069\"\u003edepth and a sense of environment\u003c\/strong\u003e , allowing natural reverberations and spatial information to emerge that make the soundstage credible and immersive.\u003c\/p\u003e\n\u003cp data-end=\"2593\" data-start=\"2224\"\u003e🎧 \u003cstrong data-end=\"2284\" data-start=\"2227\"\u003eUse in Headphone Amplifiers and Driver Stages Hi-Fi\u003c\/strong\u003e \u003cbr data-end=\"2287\" data-start=\"2284\"\u003eThe 5V4G Zenith is particularly suitable for refined and low-consumption systems, where it can best express its \u003cstrong data-end=\"2434\" data-start=\"2411\"\u003etonal refinement\u003c\/strong\u003e and \u003cstrong data-end=\"2485\" data-start=\"2440\"\u003eability to promote three-dimensionality\u003c\/strong\u003e . Ideal for tube DACs, line stage power supplies and high-sensitivity headphone amplifiers.\u003c\/p\u003e\n\u003cp data-end=\"2920\" data-start=\"2595\"\u003e🎸 \u003cstrong data-end=\"2643\" data-start=\"2598\"\u003eUse in Guitar and Bass Amplifiers\u003c\/strong\u003e\u003cbr data-end=\"2646\" data-start=\"2643\"\u003eLess common in guitar than the 5U4G or GZ34, but perfect for \u003cstrong data-end=\"2763\" data-start=\"2736\"\u003elow-powered vintage\u003c\/strong\u003e amps or \u003cstrong data-end=\"2788\" data-start=\"2766\"\u003estudio guitars\u003c\/strong\u003e where you want \u003cstrong data-end=\"2822\" data-start=\"2804\"\u003esmooth response\u003c\/strong\u003e , \u003cstrong data-end=\"2849\" data-start=\"2824\"\u003egradual sag\u003c\/strong\u003e and \u003cstrong data-end=\"2886\" data-start=\"2852\"\u003enatural harmonic transitions\u003c\/strong\u003e , with well-balanced compression.\u003c\/p\u003e\n\u003cp data-end=\"3257\" data-start=\"2922\"\u003e🎯 \u003cstrong data-end=\"2957\" data-start=\"2925\"\u003eNote for audiophiles and technicians\u003c\/strong\u003e\u003cbr data-end=\"2960\" data-start=\"2957\"\u003eA valve \u003cstrong data-end=\"3011\" data-start=\"2972\"\u003ewith a poetic and transparent character\u003c\/strong\u003e , suitable for high sensitivity systems and for those who want a \u003cstrong data-end=\"3119\" data-start=\"3085\"\u003emore analog and less analytical\u003c\/strong\u003e reproduction. The ST structure and the black plates also make it an aesthetically fascinating choice for vintage restorations or custom creations.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTubes Tested\u003c\/strong\u003e on \u003cstrong\u003eFunke W19\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003c\/strong\u003e Va = 60V, Vf = 5V \u003cstrong\u003e\u003cbr\u003eGood from:\u003c\/strong\u003e Ia = 55 mA \u003cstrong\u003e\u003cbr\u003eAverage 100%:\u003c\/strong\u003e Ia = 84.6 mA \u003cstrong\u003e\u003cbr\u003eTEST RESULT:\u003c\/strong\u003e STRONG\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValve\u003c\/strong\u003e :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1\u003c\/strong\u003e : Ia = 60 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2\u003c\/strong\u003e : Ia = 61 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOperation:\u003c\/strong\u003e Stable tube, silent in operation and suitable for providing a regular and well-controlled power supply. Tested with Funke W19 tube tester.\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 Vintage Tubes - Tested and in perfect working order. Supplied in our custom box for optimum protection.\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 \u003cspan\u003eVery Good – Clearly legible writing with slight signs of aging, no obvious defects. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e MR -\u003cmeta charset=\"utf-8\"\u003e Code not decipherable. Year of manufacture detected by internal structure. Manufactured in the 1950s.\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\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e","brand":"ZENITH","offers":[{"title":"Default Title","offer_id":54736746316124,"sku":"02968U","price":482.0,"currency_code":"RON","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_aeb7d074-41ed-4529-8416-51eb7065470d.jpg?v=1749720152","url":"https:\/\/vacuumtubestreasures.com\/en-ro\/products\/5v4g-gz32-zenith-st-shape-black-plates-bottom-foil-dimpled-getter-tested-tube-made-in-usa-50s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}