{"product_id":"5881-tungsol-p12","title":"(!!!!) (Best Value Pair) 5881 Tungsol and Tungsol branded RCA NOS 1957-1959 (63ma and 63ma)","description":"\u003cp\u003e1 matched pair) 5881 Tungsol 1957 NOS and Tungsol branded RCA 1959 NOS slightly tilted glass - in white boxes - best in breed\u003c\/p\u003e\n\u003cp\u003e1 tube) 63ma Gm=5400\u003c\/p\u003e\n\u003cp\u003e1 tube) 63ma Gm=5500\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eGood used mA range 55-65ma\u003c\/p\u003e\n\u003cp\u003eGood used Gm = 4500-5500\u003cbr\u003e \u003c\/p\u003e\n\u003cp\u003erecommended for:\u003c\/p\u003e\n\u003cp\u003e- Pro Dawg (copy of 5E5A Circuit)\u003cbr\u003e- Naylor SD60\u003cbr\u003e- Fender Bassman RI 1956, 1959\u003cbr\u003e- Fender Pro-Amp 1962\u003cbr\u003e- Victoria Regal 2007\u003cbr\u003e- Melody SP3 amp\u003cbr\u003e- Heath W4AM mono amps\u003cbr\u003e- Audio Note SORO linestage\u003cbr\u003e- Mesa Boogie Mark 4\u003cbr\u003e- Supratek\u003cbr\u003e- CARR Rambler\u003cbr\u003e- Line6 Spider Valve 112 (2007) Reinhold Bogner Amplification UK\u003cbr\u003e- Clark Tyger 2011\u003cbr\u003e- Clark Piedmont 2003\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"5881 Tungsol","offer_id":37711441526948,"sku":"5881tspair","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/6_180c7b03-4663-4a29-bdae-240572904a90.jpg?v=1787081050","url":"https:\/\/tubeworldexpress.com\/products\/5881-tungsol-p12","provider":"Tube World Express","version":"1.0","type":"link"}