{"product_id":"matched-pair-ken-rad-6sj7-vacuum-tubes-98099","title":"Matched Pair Ken-Rad 6SJ7 Vacuum Tubes NOS-Testing","description":"\u003cp\u003eThis new old stock-testing, perfectly-matched pair of Ken-Rad 6SJ7s 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 58 for Tube One and 58 for Tube Two where minimum (65%) is 40.\u003c\/p\u003e\n\u003cp\u003eThey have E5E and E5E date codes, respectively.\u003c\/p\u003e\n\u003cp\u003eI am playing them as I write in my Musical Paradise MP-301 MK3 and they sound excellent. They are microphonic and are fine in the preamp stage of my MP-301 and other gentle environments. They are, however, totally unsuited for use in guitar amps or any other vibratory environment.\u003c\/p\u003e","brand":"Lowtechelec","offers":[{"title":"Default Title","offer_id":62875012497567,"sku":null,"price":21.68,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/5344\/9631\/files\/il_fullxfull.6569943243_99bp_aaffcd7a-c16a-4cdd-867c-3ca7b898073c.jpg?v=1790427917","url":"https:\/\/lowtechelec.com\/en-au\/products\/matched-pair-ken-rad-6sj7-vacuum-tubes-98099","provider":"Lowtechelec","version":"1.0","type":"link"}