{"product_id":"6l6g-sylvania-smoked-glass-square-bottom-getter-pair-same-factory-code-052-amplitrex-tested-strong","title":"6L6G SYLVANIA Smoked Glass Square Bottom Getter - Pair - Same Factory Code 052 - Amplitrex Tested - STRONG","description":"\u003cp class=\"p1\"\u003e \u003cb\u003e6L6G SYLVANIA – Smoked Glass – Square Bottom Getter – Pair – Same Factory Code 052 – AMPLITREX Tested – Test STRONG\u003c\/b\u003e\u003c\/p\u003e\n\n\u003ch3\u003e \u003cb\u003eGeneral Description\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p4\"\u003e This \u003cspan class=\"s2\"\u003e\u003cb\u003epair of 6L6G SYLVANIA tubes\u003c\/b\u003e\u003c\/span\u003e , made in the United States, represents one of the most fascinating interpretations of the historic American 6L6 family. The classic \u003cspan class=\"s2\"\u003e\u003cb\u003eG-style “coke bottle” bulb with smoked glass\u003c\/b\u003e\u003c\/span\u003e is typical of high-quality vintage production and gives these tubes a strong technical and collectible value.\u003c\/p\u003e\n\n\u003cp class=\"p4\"\u003e The internal structure with \u003cspan class=\"s2\"\u003e\u003cb\u003esquare bottom getter\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s2\"\u003e\u003cb\u003erobust plates\u003c\/b\u003e\u003c\/span\u003e is characteristic of Sylvania productions of the time, known for their construction solidity and operational stability.\u003c\/p\u003e\n\n \u003cp class=\"p4\"\u003eBoth tubes bear \u003cspan class=\"s2\"\u003e\u003cb\u003ethe same manufacturing code 052\u003c\/b\u003e\u003c\/span\u003e , indicating that they come from the same production batch. They have been \u003cspan class=\"s2\"\u003e\u003cb\u003etested in our laboratory on AMPLITREX AT-1000\u003c\/b\u003e\u003c\/span\u003e , with \u003cspan class=\"s2\"\u003e\u003cb\u003eSTRONG\u003c\/b\u003e\u003c\/span\u003e results and stable electrical behavior.\u003c\/p\u003e\n\n\u003ch3\u003e \u003cb\u003eSound Characteristics\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eBass:\u003c\/b\u003e Deep and well-structured. The low range is full and authoritative, with good articulation and natural rhythm support.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eMids:\u003c\/b\u003e Rich and three-dimensional. Vocals are warm and present, while acoustic instruments and guitars maintain great naturalness and harmonic texture.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eHighs:\u003c\/b\u003e Smooth and refined. The highs are extended but still controlled, with a fine grain that favors prolonged listening.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eDynamics:\u003c\/b\u003e Smooth and progressive. Transient response is natural and musical, with a coherent, non-rigid output.\u003c\/p\u003e\n\n \u003cp class=\"p1\"\u003e\u003cb\u003eSoundstage:\u003c\/b\u003e Wide and well-layered soundstage, with good depth and natural separation of sound planes.\u003c\/p\u003e\n\n\u003ch3\u003e \u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p4\"\u003e Ideal for amplifiers designed for \u003cspan class=\"s2\"\u003e\u003cb\u003e6L6G \/ 6L6GA \/ 6L6GB \/ 5881\u003c\/b\u003e\u003c\/span\u003e , where you are looking for:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e musicality and naturalness of timbre\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e rich and engaging media\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e typically American sound character\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p4\"\u003e The fact that they come from the same production batch contributes to good operational consistency between the two specimens.\u003c\/p\u003e\n\n\u003ch3\u003e \u003cb\u003e🎸 Use in Music Applications\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e \u003cspan class=\"s3\"\u003eAlso highly prized in\u003c\/span\u003e \u003cb\u003evintage and boutique guitar amps\u003c\/b\u003e \u003cspan class=\"s3\"\u003e, where\u003c\/span\u003e \u003cb\u003esmoked glass 6L6Gs\u003c\/b\u003e \u003cspan class=\"s3\"\u003eare known for:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e warm and harmonically complex mids\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e smooth and musical dynamic response\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e authentic vintage sound character\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003e \u003cb\u003e🎯 Note for audiophiles and technicians\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e\n\n SYLVANIA \u003cspan class=\"s1\"\u003eProduction\u003c\/span\u003e \u003cb\u003e– Made in USA\u003c\/b\u003e\n\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eSmoked Glass Coke Bottle\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eSquare Bottom Getter\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eSame Factory Code 052\u003c\/b\u003e\n\u003c\/li\u003e\n\n \u003cli class=\"p1\"\u003e\u003cb\u003eAMPLITREX Tested\u003c\/b\u003e\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eSTRONG Test\u003c\/b\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p4\"\u003e A pair with great historical and sonic charm, representative of the classic \u003cspan class=\"s2\"\u003e\u003cb\u003eAmerican 6L6Gs\u003c\/b\u003e\u003c\/span\u003e , capable of offering musicality, reliability and vintage character in full \u003cspan class=\"s2\"\u003e\u003cb\u003eVacuum Tubes Treasures\u003c\/b\u003e\u003c\/span\u003e style.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e \u003cstrong\u003eTest Results:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp\u003e Valve tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Conditions:\u003c\/strong\u003e \u003cspan\u003eVa = 350V; Vg2 = 250; Vg = -18V\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eAverage 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 5.2 ; Ia = 54 mA\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e\u003cstrong\u003eTest result:\u003c\/strong\u003e\u003c\/span\u003e \u003cstrong data-end=\"3815\" data-start=\"3800\"\u003eSTRONG\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eValve #1:\u003c\/strong\u003e Gm = 4.2 ; Ia = 47.7 mA\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eValve #2:\u003c\/strong\u003e Gm = 4.2 ; Ia = 40.0 mA\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e \u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Standard. Tested and approved for use in hi-fi and guitar amplifiers.\u003c\/span\u003e\n\u003c\/li\u003e\n\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\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e \u003cstrong\u003eConditions:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage tubes - Tested and in perfect working order. Shipped in our custom box for optimal protection.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e \u003cspan\u003eExcellent – ​​Excellently preserved lettering, minimal signs of wear. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e 052, generally interpreted as late 1950 production (52nd week) according to the RMA\/EIA open coding system used by Sylvania.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\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":"SYLVANIA","offers":[{"title":"Default Title","offer_id":56937931833692,"sku":"03456","price":149.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_2db4e3ad-054a-40b7-b56b-d5d1c40449ba.jpg?v=1772901257","url":"https:\/\/vacuumtubestreasures.com\/en-lv\/products\/6l6g-sylvania-smoked-glass-square-bottom-getter-pair-same-factory-code-052-amplitrex-tested-strong","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}