{"product_id":"matched-quad-general-electric-ge-6sn7-86837","title":"Matched Quad General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods","description":"\u003cp\u003eThis matched quad of GE 6SN7GTB dual triodes was tested on our Paul Hart-calibrated TV7\/U for shorts, gas and transconductance. There were no shorts or gas. \u003c\/p\u003e\n\u003cp\u003eTransconductance measured 56\/56 for Tube One and 58\/61 for Tube Two. Tubes Three and Four measured 58\/61 and 60\/62, respectively. (Minimum (65%) is 50\/50.) \u003c\/p\u003e\n\u003cp\u003eThey have horse shoe getters; copper support rods; great flashing and 60-13 188-5, 56-39 188-5, 59-13 188-5 and 57-26 188-5 date\/factory codes, respectively. \u003c\/p\u003e\n\u003cp\u003eI have played them in my Radio Craftsmen RC-2 monoblock amplifiers (see Pictures Six through Nine) and they sounded great. They are dead quiet when the volume is muted and have excellent frequency response, sound-staging, and dynamics.\u003c\/p\u003e","brand":"Lowtechelec","offers":[{"title":"Default Title","offer_id":62822910853279,"sku":null,"price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/5344\/9631\/files\/il_fullxfull.8139295030_l49x.jpg?v=1782780685","url":"https:\/\/lowtechelec.com\/products\/matched-quad-general-electric-ge-6sn7-86837","provider":"Lowtechelec","version":"1.0","type":"link"}