{"product_id":"ge-12au7-6189w","title":"GE Military Stock 12AU7 \/ 6189W","description":"\u003ch1\u003eGE 12AU7 \/ 6189W\u003c\/h1\u003e\n\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/Jr1SF1aJWNg\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\n\u003cfigure style=\"text-align: center;\"\u003e\n\u003cblockquote\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cspan\u003e“\u003c\/span\u003eIn addition to excellent definition, the GE 6189 tubes were the quietest 12AU7 types in the world. Nothing I had in stock, currently produced or NOS, was as stunningly quiet as the GE. It was not even close. With the quiet came added definition, layering, blacker background, and greater realism.\u003cspan\u003e”\u003c\/span\u003e\n\u003c\/blockquote\u003e\n\u003cfigcaption class=\"source\"\u003e— ROBERT H. LEVI, POSITIVE FEEDBACK, DECEMBER 2020\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHelically-wound filaments baby! This special military-spec 12AU7, when selected by ear by the Upscale Audio crew, can in some circumstances (but not all) drop the noise floor; blacker blacks make for better detail and musicality from top to bottom. Bob Levi from Positive Feedback Online was shocked by the results!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlatinum grade -\u003c\/strong\u003e The best of the best. Lowest noise and microphony with the tightest triode balance we have available. This is typically 10% or tighter, but may be higher depending on available stock. \u003cstrong\u003eKevin's Stash\u003c\/strong\u003e are the handful of tubes in this grade that test to near perfection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGold grade -\u003c\/strong\u003e Low noise and microphonics with a triode balance typically between 15% and 20%, but may be higher depending on available stock.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/grading-and-matching-small-signal-tubes\" target=\"_blank\"\u003e\u003cstrong\u003eClick here for a more in depth discussion on how we grade tubes.\u003cbr\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003ePrice includes matching in any quantity you need at \u003cstrong\u003eno extra charge.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE: Platinum and Gold grades make up a small percentage of the stock once they go through all our tests, including testing by ear.   If you are a reseller, we have a large quantity of these to offer, which are great tubes but do not meet our standards.   They are available in packs of 100.  Please inquire. \u003c\/strong\u003e\u003c\/p\u003e","brand":"GE Military Stock","offers":[{"title":"Gold Grade \/ No Cryo","offer_id":37476278272184,"sku":"GE 12AU7 G","price":65.0,"currency_code":"USD","in_stock":true},{"title":"Platinum Grade \/ No Cryo","offer_id":37476278304952,"sku":"GE 12AU7 P","price":72.0,"currency_code":"USD","in_stock":true},{"title":"Kevin's Stash \/ No Cryo","offer_id":37476278337720,"sku":"GE 12AU7 KS","price":99.0,"currency_code":"USD","in_stock":true},{"title":"Gold Grade \/ Yes Cryo","offer_id":38004267352248,"sku":"GE 12AU7 G C","price":65.0,"currency_code":"USD","in_stock":true},{"title":"Platinum Grade \/ Yes Cryo","offer_id":38004269449400,"sku":"GE 12AU7 P C","price":72.0,"currency_code":"USD","in_stock":true},{"title":"Kevin's Stash \/ Yes Cryo","offer_id":38004272005304,"sku":"GE 12AU7 KS C","price":107.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/GE12AU7.jpg?v=1741631158","url":"https:\/\/upscaleaudio.pro\/products\/ge-12au7-6189w","provider":"Upscale Audio","version":"1.0","type":"link"}