{"product_id":"black-glass-tung-sol-matched-pair","title":"6SL7GT - Black Glass Tung-Sol - Matched Pair - TWO PAIRS Avail","description":"\u003ch2 data-start=\"238\" data-end=\"254\"\u003e\n\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cem\u003eTWO pairs available.  Price is for ONE PAIR.  CHOOSE QTY 1 TO RECEIVE ONE PAIR.\u003c\/em\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003eTV-7 Results:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e51\/32 \u0026amp; 50\/32\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e50\/32 \u0026amp; 50\/32\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e51\/32 \u0026amp;50\/32\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e58\/32 \u0026amp; 54\/32\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"238\" data-end=\"254\"\u003eWhat they are\u003c\/h2\u003e\n\u003cul data-start=\"255\" data-end=\"635\"\u003e\n\u003cli data-start=\"255\" data-end=\"296\"\u003e\n\u003cp data-start=\"257\" data-end=\"296\"\u003e\u003cstrong data-start=\"257\" data-end=\"266\"\u003eType:\u003c\/strong\u003e 6SL7GT \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"297\" data-end=\"330\"\u003e\n\u003cp data-start=\"299\" data-end=\"330\"\u003e\u003cstrong data-start=\"299\" data-end=\"316\"\u003eManufacturer:\u003c\/strong\u003e Tung-Sol, USA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"331\" data-end=\"371\"\u003e\n\u003cp data-start=\"333\" data-end=\"371\"\u003e\u003cstrong data-start=\"333\" data-end=\"341\"\u003eEra:\u003c\/strong\u003e late \u003cstrong data-start=\"347\" data-end=\"371\"\u003e1940s to early 1950s\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"372\" data-end=\"635\"\u003e\n\u003cp data-start=\"374\" data-end=\"393\"\u003e\u003cstrong data-start=\"374\" data-end=\"391\"\u003eConstruction:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"396\" data-end=\"635\"\u003e\n\u003cli data-start=\"396\" data-end=\"425\"\u003e\n\u003cp data-start=\"398\" data-end=\"425\"\u003e\u003cstrong data-start=\"398\" data-end=\"413\"\u003eBlack glass\u003c\/strong\u003e envelopes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"428\" data-end=\"456\"\u003e\n\u003cp data-start=\"430\" data-end=\"456\"\u003e\u003cstrong data-start=\"430\" data-end=\"454\"\u003eBlack phenolic bases\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"459\" data-end=\"521\"\u003e\n\u003cp data-start=\"461\" data-end=\"521\"\u003eCopper-colored internal hardware visible through the glass\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"637\" data-end=\"734\"\u003eThese are \u003cem data-start=\"647\" data-end=\"652\"\u003enot\u003c\/em\u003e later gray-glass or rebranded variants — these are the real-deal Tung-Sol builds.\u003c\/p\u003e\n\u003chr data-start=\"736\" data-end=\"739\"\u003e\n\u003ch2 data-start=\"741\" data-end=\"789\"\u003eInternal construction notes (why people care)\u003c\/h2\u003e\n\u003cul data-start=\"790\" data-end=\"1033\"\u003e\n\u003cli data-start=\"790\" data-end=\"850\"\u003e\n\u003cp data-start=\"792\" data-end=\"850\"\u003e\u003cstrong data-start=\"792\" data-end=\"824\"\u003eRound \/ oval plate structure\u003c\/strong\u003e typical of early Tung-Sol\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"851\" data-end=\"877\"\u003e\n\u003cp data-start=\"853\" data-end=\"877\"\u003eVery robust mica spacing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"878\" data-end=\"934\"\u003e\n\u003cp data-start=\"880\" data-end=\"934\"\u003eExcellent grid alignment → low microphonics for a 6SL7\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"935\" data-end=\"1033\"\u003e\n\u003cp data-start=\"937\" data-end=\"1033\"\u003eBuilt originally for \u003cstrong data-start=\"958\" data-end=\"1002\"\u003ebroadcast, military, and instrumentation\u003c\/strong\u003e use, not consumer cost-cutting like many other tubes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1035\" data-end=\"1085\"\u003eThis is the era before bean-counters got involved.\u003c\/p\u003e\n\u003chr data-start=\"1087\" data-end=\"1090\"\u003e\n\u003ch2 data-start=\"1092\" data-end=\"1111\"\u003eSonic reputation\u003c\/h2\u003e\n\u003cp data-start=\"1112\" data-end=\"1144\"\u003eThis is where these tubes shine:\u003c\/p\u003e\n\u003cul data-start=\"1146\" data-end=\"1391\"\u003e\n\u003cli data-start=\"1146\" data-end=\"1198\"\u003e\n\u003cp data-start=\"1148\" data-end=\"1198\"\u003e\u003cstrong data-start=\"1148\" data-end=\"1157\"\u003eTone:\u003c\/strong\u003e rich, harmonically dense, very “organic”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1199\" data-end=\"1251\"\u003e\n\u003cp data-start=\"1201\" data-end=\"1251\"\u003e\u003cstrong data-start=\"1201\" data-end=\"1214\"\u003eMidrange:\u003c\/strong\u003e big, saturated, emotionally engaging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1252\" data-end=\"1282\"\u003e\n\u003cp data-start=\"1254\" data-end=\"1282\"\u003e\u003cstrong data-start=\"1254\" data-end=\"1264\"\u003eHighs:\u003c\/strong\u003e sweet, not etched\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1283\" data-end=\"1347\"\u003e\n\u003cp data-start=\"1285\" data-end=\"1347\"\u003e\u003cstrong data-start=\"1285\" data-end=\"1294\"\u003eBass:\u003c\/strong\u003e full and rounded (not ultra-tight, but very natural)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1348\" data-end=\"1391\"\u003e\n\u003cp data-start=\"1350\" data-end=\"1391\"\u003e\u003cstrong data-start=\"1350\" data-end=\"1365\"\u003eSoundstage:\u003c\/strong\u003e wide with excellent depth\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1393\" data-end=\"1449\"\u003eIn preamps and driver stages they’re often described as:\u003c\/p\u003e\n\u003cblockquote data-start=\"1450\" data-end=\"1497\"\u003e\n\u003cp data-start=\"1452\" data-end=\"1497\"\u003e\u003cem data-start=\"1452\" data-end=\"1497\"\u003e“big vintage American tone with zero glare”\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp data-start=\"1570\" data-end=\"1602\"\u003e \u003c\/p\u003e\n\u003chr data-start=\"1604\" data-end=\"1607\"\u003e\n\u003ch2 data-start=\"1609\" data-end=\"1628\"\u003eHow they compare\u003c\/h2\u003e\n\u003cul data-start=\"1629\" data-end=\"1808\"\u003e\n\u003cli data-start=\"1629\" data-end=\"1684\"\u003e\n\u003cp data-start=\"1631\" data-end=\"1684\"\u003e\u003cstrong data-start=\"1631\" data-end=\"1647\"\u003eVs RCA 6SL7:\u003c\/strong\u003e Tung-Sol is richer and more textured\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1685\" data-end=\"1741\"\u003e\n\u003cp data-start=\"1687\" data-end=\"1741\"\u003e\u003cstrong data-start=\"1687\" data-end=\"1708\"\u003eVs Sylvania 6SL7:\u003c\/strong\u003e warmer, less lean, more romantic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1742\" data-end=\"1808\"\u003e\n\u003cp data-start=\"1744\" data-end=\"1808\"\u003e\u003cstrong data-start=\"1744\" data-end=\"1768\"\u003eVs later production:\u003c\/strong\u003e quieter, smoother, far more dimensional\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1810\" data-end=\"1883\"\u003eThese are firmly in \u003cstrong data-start=\"1830\" data-end=\"1849\"\u003e“end-game 6SL7”\u003c\/strong\u003e territory for a lot of listeners.\u003c\/p\u003e\n\u003chr data-start=\"1885\" data-end=\"1888\"\u003e","brand":"Bespoke Audio Shop","offers":[{"title":"Default Title","offer_id":53293161873774,"sku":"BSA-3\/4","price":195.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/2721\/8030\/files\/BSA-4a.jpg?v=1770693677","url":"https:\/\/bespoke-audio-shop.myshopify.com\/products\/black-glass-tung-sol-matched-pair","provider":"Bespoke Audio Shop","version":"1.0","type":"link"}