{"title":"Western Electric","description":"","products":[{"product_id":"216a-western-electric-display-tube","title":"(DISPLAY TUBE) 216A Western Electric used 1920's","description":"\u003cp\u003eDISPLAY TUBE\u003c\/p\u003e\n\u003cp\u003e216A Western Electric Tennis Ball used 1920's\u003c\/p\u003e\n\u003cp\u003etip is broken off\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eGeneral Information\u003c\/h1\u003e\n\u003cp\u003e- 5-6V Filament @ 1A\u003c\/p\u003e\n\u003cp\u003e- Internal structure similar to VT-2\u003c\/p\u003e\n\u003cp\u003e- 101D can be used as a replacement but with shorter lifespan\u003c\/p\u003e\n\u003cp\u003e- 216A was used in No.10A Loud Speaking Telephone Outfit containing the\u003c\/p\u003e\n\u003cp\u003e- 7A amplifier \u0026amp; 518W receiver\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"216A Western Electric Display Tube","offer_id":476614657,"sku":"216a_display","price":44.44,"currency_code":"USD","in_stock":true}]},{"product_id":"284d-amperex-nos-1944","title":"284D Amperex brass base low emission display tube 1940 era","description":"\u003ch1\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e284D Amperex brass base low emission display tube\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eGeneral Information\u003c\/h1\u003e\n\u003cp\u003eRecommended for SET DIY amps only\u003c\/p\u003e\n\u003cp\u003e(284D was developed in 1937, replaced the 284A-B-C, is a variant of 242A WE, similar to 845 RCA with lower Iplate rating)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e(40 watt plate dissipation, 50 watts using 2 tubes, Iplate max = 64ma, Vplate max = 1250VDC)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003emu=4.8\u003c\/p\u003e\n\u003cp\u003eGm=2500\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"284D Amperex","offer_id":479091457,"sku":"284d","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_892a2e9b-d5c5-412d-9c44-9339dc902b22.jpg?v=1729057881"},{"product_id":"281a-western-electric-1930s","title":"281A Western Electric like new 1930's (38ma)","description":"\u003cp\u003e281A Western Electric Balloon engraved base like new 1930's - reboxed\u003c\/p\u003e\n\u003cp\u003e38ma\u003c\/p\u003e\n\u003cp\u003eGm=1500\u003c\/p\u003e\n\u003cp\u003eVplate=150V\u003c\/p\u003e\n\u003cp\u003eVscreen=70V\u003c\/p\u003e\n\u003cp\u003eVgrid=-60\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003eModerate Power co-planar grid tetrode\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eVplate max = 250V\u003c\/p\u003e\n\u003cp\u003eIplate max = 45mA\u003c\/p\u003e\n\u003cp\u003eVfil = 5V @ 1.6A\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"281A Western Electric","offer_id":479095633,"sku":"281a","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_f73212c5-8441-43ea-bd1d-41959b35d807.jpg?v=1705209413"},{"product_id":"291a-western-electric-nos-1940","title":"291A Western Electric NOS around 1940 (1 pair)","description":"[[start tab]]\n\u003ch1\u003eTube Specs\u003c\/h1\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e1 Matched Pair\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePentagrid converter\u003c\/p\u003e\n\u003cp\u003e1940\u003c\/p\u003e\n\u003cp\u003eengraved bases\u003c\/p\u003e\n\u003cp\u003eoriginal boxes with 291A data sheets\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e[[end tab]] [[start tab]]\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch1\u003eTest Data\u003c\/h1\u003e\n\u003cp\u003eTest results on TV-7D\/U:\u003c\/p\u003e\n\u003cp\u003e1 tube) 60\/25\u003c\/p\u003e\n\u003cp\u003e1 tube) 56\/25\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"line-height: 1.2;\"\u003e[[end tab]]\u003c\/span\u003e \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e[[start tab]]\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch1\u003eGeneral Info\u003c\/h1\u003e\n\u003cp\u003e10V Filament\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVgrid1=7.5V\u003c\/p\u003e\n\u003cp\u003eVgrid2=180V\u003c\/p\u003e\n\u003cp\u003eVgrid3=75V\u003c\/p\u003e\n\u003cp\u003eVgrid4=-3V\u003c\/p\u003e\n\u003cp\u003eVgrid5=75V\u003c\/p\u003e\n\u003cp\u003eMu=275\u003c\/p\u003e\n\u003cp\u003eGm=690\u003c\/p\u003e\n\u003cp\u003eRp=400Kohms\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e[[end tab]]\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"291A","offer_id":479133369,"sku":"291a","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/291a1.jpg?v=1571438752"},{"product_id":"412a-western-electric-nos-1959-pair-1","title":"(!!) (Best Pair) 412A Western Electric NOS \"D\" getter halo 1959 (51-52\/40 x 2 tubes)","description":"\u003cp\u003e1 pair) 412A Western Electric NOS \"D\" getter halo 1959 (5952)\u003c\/p\u003e\n\u003cp\u003e1 tube) 51\/40 and 52\/40 \u003c\/p\u003e\n\u003cp\u003e1 tube) 51\/40 and 52\/40  \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e6754 Bendix=412A Western Electric\u003c\/p\u003e\n\u003cp\u003eMatched on TV-7D\/U\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":518271645,"sku":"412Apair","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_04e87412-d35f-4feb-ba9c-07f5bc00e1d6.jpg?v=1689024775"},{"product_id":"272a-western-electric-used-1950s-pair","title":"(!!) (Good Value Pair) 272A Western Electric \"meshplate\" used\/good 1951 and 1956 (5.8ma and 5.9ma)","description":"\u003cp\u003e\u003cstrong\u003e1 pair) 272A WE \"meshplate\" used\/good in white boxes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 5.8ma Gm=800 (5639=1956)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 5.9ma Gm=800 (113=1951)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGeneral Information:\u003c\/p\u003e\nVfil=10V @ 320ma, Vplate=140V, Iplate=5.4ma, Mu=5.6, Gm=670, Rp=7400 ohms\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"272A WE PAIR","offer_id":519002629,"sku":"272a","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_365f2bc2-2f0b-413d-be0a-1c99586f6022.jpg?v=1649137026"},{"product_id":"448a-western-electric-tipped-top-used-like-new-1965p2","title":"(!!!) (Best Pair #2) 448A Western Electric tipped top used\/test like new 1965 (34ma and 35ma)","description":"\u003cp\u003e1 pair) 448A WE \"tipped top\" used\/tests like new D getter halo 1965 reboxed\u003c\/p\u003e\n\u003cp\u003e1 tube) 35ma Gm=26,000\u003c\/p\u003e\n\u003cp\u003e1 tube) 34ma Gm=28,000 slightly taller bottle\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAmplitrex Test Data:\u003c\/p\u003e\n\u003cp\u003eVplate=135V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-2\u003c\/p\u003e\n\u003cp\u003eGood Ma range 20-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 23,000 - 27,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDIY pentode\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":564140537,"sku":"448a_pair","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_f495ee7d-ccb8-4a7f-a29f-fd4286d0decc.jpg?v=1761594204"},{"product_id":"329a-western-electric-nos-1966-p2","title":"329A Western Electric NOS 1966 (1 Pair: 34.5ma and 38ma)","description":"\u003cp\u003e1 pair) 329A Western Electric \"D\" getter halo NOS (6652=1966) large getters, original boxes\u003c\/p\u003e\n\u003cp\u003e1 tube) 34.5ma Gm=3100 \u003c\/p\u003e\n\u003cp\u003e1 tube) 38.0ma Gm=3250 \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-15V\u003c\/p\u003e\n\u003cp\u003eGood Ma range 29-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm range 2800-2900 \u003c\/p\u003e\n\u003ch1\u003e \u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003eGeneral Information\u003c\/p\u003e\n\u003cp\u003e(329A=311A with a 7.5V filament)\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"329A Western Electric NOS 1966 pair","offer_id":564146393,"sku":"329A","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/329ap2.jpg?v=1571438787"},{"product_id":"329a-western-electric-nos-1952-1957-pair","title":"329A Western Electric NOS 1952-1957 (1 Pair: 30ma and 30.5ma)","description":"\u003cp\u003e1 pair) 329A Western Electric \"D\" getter halo NOS 1952 and 1957 large getters, original boxes\u003c\/p\u003e\n\u003cp\u003e1 tube) 30ma Gm=3000 (5739=1957)\u003c\/p\u003e\n\u003cp\u003e1 tube) 30.5ma Gm=3000 (213=1952)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-15V\u003c\/p\u003e\n\u003cp\u003eGood Ma range 29-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm range 2800-2900 \u003c\/p\u003e\n\u003ch1\u003e \u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003eGeneral Information\u003c\/p\u003e\n\u003cp\u003e(329A=311A with a 7.5V filament)\u003c\/p\u003e\n\u003cp\u003e(329A=311A with a 7.5V filament)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"329A WE PAIR","offer_id":564146721,"sku":"329A","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/329ap3.jpg?v=1571438788"},{"product_id":"329a-we-nos-1956-pair","title":"(!!!) (~ RECOMMENDED PAIR ~) 329A Western Electric NOS 1956 (33ma and 34ma)","description":"\u003cp\u003e1 pair) 329A Western Electric \"D\" getter halo NOS 1956 large getters, original boxes\u003c\/p\u003e\n\u003cp\u003e1 tube) 34ma Gm=3100 (613=1956)\u003c\/p\u003e\n\u003cp\u003e1 tube) 33ma Gm=3100 (5626=1956)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-15V\u003c\/p\u003e\n\u003cp\u003eGood Ma range 29-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm range 2800-2900 \u003c\/p\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003eGeneral Information\u003c\/p\u003e\n\u003cp\u003e(329A=311A with a 7.5V filament)\u003c\/p\u003e\n\u003ch1\u003eGeneral Information\u003c\/h1\u003e\n\u003cp\u003e(329A=311A with a 7.5V filament)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"329A Western Electric NOS pair","offer_id":564147753,"sku":"329Apair","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/329ap4.jpg?v=1571438788"},{"product_id":"412a-western-electric-nos-1981","title":"412A Western Electric NOS 1981 (54\/40 and 54\/40)","description":"\u003cp\u003e412A Western Electric NOS 1981 in 1982 box\u003c\/p\u003e\n\u003cp\u003e54\/40\u003c\/p\u003e\n\u003cp\u003e54\/40\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e6754 Bendix=412A Western Electric\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":598862981,"sku":"412A_81","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_fa8f2c1c-0000-4828-a8f0-df3e98f3cfb8.jpg?v=1699039145"},{"product_id":"412a-western-electric-nos-1965","title":"(!!) 412A Western Electric NOS 1968 (52\/40 and 53\/40)","description":"\u003cp\u003e412A Western Electric NOS 1968\u003c\/p\u003e\n\u003cp\u003e52\/40\u003c\/p\u003e\n\u003cp\u003e53\/40\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e6754 Bendix=412A Western Electric\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"412A Western Electric NOS 1968","offer_id":601478557,"sku":"412A","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/3_c05b11b5-5e75-4d9b-a864-bd8c4cc0020c.jpg?v=1699038993"},{"product_id":"301a-western-electric","title":"(sold out) 301A Western Electric printed base 1965","description":"\u003cp\u003e301A WE NOS 1965 original box (60\/40 and 62\/40 tested on TV-7-D\/U)\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e(301A=similar to type 83 with 1800PIV rating)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eRecommended for:\u003c\/p\u003e\n\u003cp\u003e71B and 90A Western Electric amps\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":606263017,"sku":"301Anos","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/301a65.jpg?v=1571438796"},{"product_id":"copy-of-301a-western-electric-engraved-base-1930s-single","title":"355A Cetron NOS original box 1972","description":"\u003cp\u003e1 tube) 355A Cetron NOS original box 1972 perfect condition, tests very good\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(355A is similar to 354A except max. plate voltage is 1500V for 354A versus 350V for 355A)\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":606284861,"sku":"355acet","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/355acet.jpg?v=1571438796"},{"product_id":"314a-we-v1","title":"(!!!) 314A Western Electric Engraved base NOS 1930's (full-wave rectifier) (56\/40 and 63\/40)","description":"\u003cp\u003e1 tube) 314A Western Electric Engraved base NOS 1930's in white box, mesh-getter\u003c\/p\u003e\n\u003cp\u003e56\/40\u003c\/p\u003e\n\u003cp\u003e63\/40\u003c\/p\u003e\n\u003cp\u003eTested on TV-7D\/U\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e \u003c\/p\u003e\n\u003cp\u003e(314A=similar to Type 83, but much lower PIV rating of 300 volts)\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":606290805,"sku":"314A","price":199.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_68df7516-6a82-4d80-8a62-9ae6097651c3.jpg?v=1635278003"},{"product_id":"375a-western-electric-nos-1950-s-1960-s-single","title":"375A Western Electric NOS 1952 (34.7ma)","description":"\u003cp\u003e375A Western Electric NOS (213=1952) (34.7ma)\u003c\/p\u003e\n\u003cp\u003eVplate=120V\u003c\/p\u003e\n\u003cp\u003eVscreen=120V\u003c\/p\u003e\n\u003cp\u003eVgrid=-12V\u003c\/p\u003e\n\u003cp\u003eGood Ma range 28-34ma\u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ch1\u003eGeneral Info\u003c\/h1\u003e\n\u003cp\u003ePower Pentode\u003c\/p\u003e\n\u003cp\u003e(20V filament, Vplate max=130V)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"375A","offer_id":609409749,"sku":"375A","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/375a522.jpg?v=1571438797"},{"product_id":"western-electric-309a-nos-1960-matched-pair","title":"(!!!!) (BEST PAIR) 309A Western Electric NOS 1960 (4.8ma and 5.1ma) (same Gm)","description":"\u003cp\u003e1 matched pair) 309A Western Electric NOS 1960 original boxes - large punch plate\u003c\/p\u003e\n\u003cp\u003e1 tube) 4.8ma Gm=1100\u003c\/p\u003e\n\u003cp\u003e1 tube) 5.1ma Gm=1100\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVscreen=75V\u003c\/p\u003e\n\u003cp\u003eVgrid=-1.5V\u003c\/p\u003e\n\u003cp\u003eGood Ma = 4.5-4.8ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 1000-1100\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Info\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Variable-Mu Pentode\u003c\/p\u003e\n\u003cp\u003e- Very low noise\u003c\/p\u003e\n\u003cp\u003e- 5 pin base\u003c\/p\u003e\n\u003cp\u003eVfil=10V @ 320ma\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eGm=1100\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World Express","offers":[{"title":"309A Western Electric NOS matched pair 1960","offer_id":609432749,"sku":"309Apr","price":288.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/309a1.jpg?v=1571438797"},{"product_id":"copy-of-101f-st-shape-western-electric-nos-1969-p3","title":"101FA ST-shape Western Electric NOS 1962 and 1972","description":"\u003cp\u003e1 pair) 101FA Western Electric NOS\u003cbr\u003e1 tube) 101FA WE NOS 1962 (40\/28)\u003cbr\u003e1 tube) 101FA WE NOS 1972 (35\/28)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e101FA is a 101F with higher gain\u003c\/p\u003e\n\u003cp\u003e101F mu = 6.5\u003c\/p\u003e\n\u003cp\u003e101FA mu = 8.9\u003c\/p\u003e\n\u003cp\u003e(can replace 101F with 101FA)\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":609540837,"sku":"101FA","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/101fa.jpg?v=1571438797"},{"product_id":"417a-we-1977-pair","title":"(!) (Pair) 417A Western Electric used\/good 1977 (12.2ma and 14ma)","description":"\u003cp\u003e1 pair) 417A Western Electric used\/good 1977\u003c\/p\u003e\n\u003cp\u003e1 tube) 12.2ma Gm=16,000 (7713=1977)\u003c\/p\u003e\n\u003cp\u003e1 tube) 14.0ma Gm=15,200 (7752=1977)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e- LAMM LP2 phono\u003cbr\u003e- Wavelength Signature 45 2004\u003cbr\u003e- Robert Koda Takumi K-70 power amp\u003cbr\u003e- Psvane T-417 Reference Tube Pre-Amplifier \u003cbr\u003e- Supratek phono\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"417A","offer_id":610458553,"sku":"417Apr","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_680355e3-0d1b-4ada-a3d2-94a8ea4dcd48.jpg?v=1677715095"},{"product_id":"copy-of-jan-cw-705a-we-nos-original-box-1944-single","title":"(Best Single) JAN-CW-705A WE NOS original box 1944","description":"\u003cp\u003e1 tube) JAN-CW-705A WE NOS original box 1944\u003c\/p\u003e\n\u003cp\u003eHalf-Wave Rectifier\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"705A WE","offer_id":610473853,"sku":"705awe","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/705awe44_a2d4af52-e597-466d-a9b2-6ce4e980cc97.jpg?v=1571438798"},{"product_id":"ck-5755-420a-raytheon-clear-top-nos-1965-p1","title":"(!!!) (Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.8\/1.9ma and 1.8\/2.0ma)","description":"\u003cp\u003e1 pair) CK-5755=420A Raytheon clear top NOS 1965\u003c\/p\u003e\n\u003cp\u003e1 tube) 1.8\/1.9ma Gm=1400\/1500\u003c\/p\u003e\n\u003cp\u003e1 tube) 1.8\/2.0ma Gm=1400\/1500\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVgrid=-.1V\u003c\/p\u003e\n\u003cp\u003eGood Ma = 1.5-2.2ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 1400-1600\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"CK-5755=420A Raytheon clear top NOS 1965","offer_id":610477345,"sku":"5755rayp1","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_166f7863-56f2-4299-a01c-75005d7b14a9.jpg?v=1671566665"},{"product_id":"417a-5842-lm-ericsson-sweden-gold-pins-nos-v1","title":"(!) (SINGLE) 417A\/5842 LM Ericsson Sweden NOS \"O\" getter halo 1960's (35ma and Gm=29,700)","description":"\u003cp\u003e417A\/5842 LM Ericsson Sweden gold pins NOS \"O\" getter halo 1960's in original box\u003c\/p\u003e\n\u003cp\u003e35ma\u003c\/p\u003e\n\u003cp\u003eGm=29,700\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003eNOT A PAIR\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=150\u003c\/p\u003e\n\u003cp\u003eVgrid=-1.5V\u003c\/p\u003e\nGood Ma range 20-25ma\u003cbr\u003e\n\u003cp\u003eGood Gm range 20,000 - 30,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e- LAMM LP2 phono\u003cbr\u003e- Wavelength Signature 45 2004\u003cbr\u003e- Robert Koda Takumi K-70 power amp\u003cbr\u003e- Psvane T-417 Reference Tube Pre-Amplifier \u003cbr\u003e- Supratek phono\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"417A","offer_id":671147805,"sku":"5842lm","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_a309ff47-ce4e-4253-8456-adc09373b2be.jpg?v=1677789554"},{"product_id":"jan-cw-705a-we-nos-original-box-1944-single","title":"(!) (Best Single) JAN-CW-705A WE NOS 1940's","description":"\u003cp\u003e1 tube) JAN-CW-705A WE NOS 1940's in white box\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ehalf-wave rectifier\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":689187117,"sku":"705Awe","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/705a1.jpg?v=1571438815"},{"product_id":"311b-western-electric-nos-1973-1975-pair","title":"(!!!!) (Recommended Pair) 311B Western Electric NOS 1973 and 1975 (35.2ma and 36.4ma)","description":"\u003cp\u003e1 pair) 311B WE NOS \"O\" getter halos in white boxes\u003c\/p\u003e\n\u003cp\u003e1 tube) 36.4ma and Gm=3250 (1973)\u003c\/p\u003e\n\u003cp\u003e1 tube) 35.2ma and Gm=3150 (1975)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-15V\u003c\/p\u003e\n\u003cp\u003eGood Ma = 30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 2900\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":734793101,"sku":"311Bpair","price":188.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_b780b923-de4e-4a19-bbf2-b167d31ca1b8.jpg?v=1581720363"},{"product_id":"311b-we-nos-6739-1967-glass-slightly-tilted","title":"(!!) (Recommended Single) 311B Western Electric NOS 1967 glass slightly tilted, large getter, in white box (33ma)","description":"\u003cp\u003e311B WE NOS (6739=1967) glass slightly tilted, large getter, in white box \u003c\/p\u003e\n\u003cp\u003e33ma\u003c\/p\u003e\n\u003cp\u003eGm=3100\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-15V\u003c\/p\u003e\n\u003cp\u003eGood Ma = 30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 2900\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":734801681,"sku":"311B","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/311b67.jpg?v=1571438824"},{"product_id":"349a-western-electric-nos-1947","title":"(sold out) 349A Western Electric","description":"\u003cp\u003e0) 349A Western Electric\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex:\u003c\/p\u003e\n\u003cp\u003eVplate=250V\u003c\/p\u003e\n\u003cp\u003eVscreen=250V\u003c\/p\u003e\n\u003cp\u003eVgrid=-14V\u003c\/p\u003e\n\u003cp\u003eNOS Ma 30-32ma\u003c\/p\u003e\n\u003cp\u003eNOS Gm=4000-4200\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":754131589,"sku":"349AWE","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/349a30.jpg?v=1583968426"},{"product_id":"300a-western-electric-engraved-base-circa-1933","title":"(!!!!) (RARE SINGLE) 300A Western Electric Engraved Base circa 1933 (60ma @ 300Vplate) (payment via wire transfer or credit card) (FREE shipping)","description":"\u003cp\u003e300A Western Electric Engraved Base circa 1933 nice condition - \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e$6299.99\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003epayment via wire transfer or credit card only\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(128, 255, 0);\"\u003e\u003cstrong\u003efree shipping via UPS or DHL\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 0);\"\u003e\u003cstrong\u003eAMPLITREX AT1000 TEST DATA:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eVfil=5VDC\u003c\/p\u003e\n\u003cp\u003eVplate=300VDC\u003c\/p\u003e\n\u003cp\u003eVgrid=-56.5VDC\u003c\/p\u003e\n\u003cp\u003eIplate=60ma\u003c\/p\u003e\n\u003cp\u003eGm=4750\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eVfil=5VDC\u003c\/p\u003e\n\u003cp\u003eVplate=400VDC\u003c\/p\u003e\n\u003cp\u003eVgrid=-80.5VDC\u003c\/p\u003e\n\u003cp\u003eIplate=71ma\u003c\/p\u003e\n\u003cp\u003eGm=4850\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(128, 255, 0);\"\u003e\u003cstrong\u003eTest on TV7D\/U = 72\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(128, 255, 0);\"\u003e\u003cstrong\u003estrong single\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eoriginal box - poor condition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e300A data sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":781590897,"sku":"300A","price":5888.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_2fa692bf-2ae3-451e-91ae-d86f560b5c22.jpg?v=1720477988"},{"product_id":"jw-6028-408a-western-electric-d-getter-nos-1954","title":"(!!!) (Best Single) JW-6028=408A Western Electric \"D\" getter NOS 1954 (105\/60)","description":"\u003cp\u003eJW-6028=408A Western Electric \"D\" getter NOS 1954 (413)\u003c\/p\u003e\n\u003cp\u003e105\/60\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on B\u0026amp;K\u003c\/p\u003e\n\u003cp\u003eAbove 85 is strong\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e20V Filament\u003c\/p\u003e\n\u003cp\u003e- Yamamoto HA-02 Headphone Amp\u003cbr\u003e- Little Dot Hybrid I+\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":799897681,"sku":"408A","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_1a9dbe9e-4ac1-4a7d-b170-ccdedc9a8e35.jpg?v=1681766838"},{"product_id":"282a-we-balloon-engraved-base-like-new-good-1-5-getter-circa-1935-single","title":"282A WE Balloon engraved base, like new, good 1.5\" getter circa 1935 (sold out)","description":"\u003cp\u003e1 tube) 282A WE Balloon engraved base, like new, good 1.5\" getter circa 1935, re-boxed\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(282A=Vplate=1000V max, Iplate=100ma max, 70 watts max)\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":801593857,"sku":"282A","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/282ln.jpg?v=1571438838"},{"product_id":"417a-we-1959","title":"F-52984=417A Western Electric used\/good 1959 (20ma and Gm=18,100)","description":"\u003cp\u003eF-52984=417A Western Electric like new (5939=1959) in white box\u003c\/p\u003e\n\u003cp\u003e20ma\u003c\/p\u003e\n\u003cp\u003eGm=18,100 \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eGood Ma range NOS 20-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm range NOS 18,000 - 25,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e- LAMM LP2 phono\u003cbr\u003e- Wavelength Signature 45 2004\u003cbr\u003e- Robert Koda Takumi K-70 power amp\u003cbr\u003e- Psvane T-417 Reference Tube Pre-Amplifier \u003cbr\u003e- Supratek phono\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"417A","offer_id":805536537,"sku":"F-52984","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/f52984.jpg?v=1571438840"},{"product_id":"713a-western-electric-by-tungsol-nos-pair-3","title":"(!!) (PAIR) 713A Western Electric by Tungsol NOS 1942-1943 (6.2ma and 6.3ma)","description":"\u003cp\u003e1 pair) 713A WE by Tungsol NOS 1942-1943\u003cbr\u003e1 tube) 6.2ma Gm=3100\u003cbr\u003e1 tube) 6.3ma Gm=3300 (WE-713A on base)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003epins cleaned on both tubes\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(Pentode, 713A=717A with black bakelite base)\u003cbr\u003emost made by Tungsol branded Tungsol or Western Electric by Tungsol\u003cbr\u003e\u003cbr\u003e- Yamamoto AO8 amp\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":841882597,"sku":"713A","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_6cb1c250-9bdb-474d-bc8b-f54d0b42a1db.jpg?v=1705437707"},{"product_id":"244a-we-nos-st-14-engraved-base-1930s-single","title":"(!!!) (Best Pair) 244A Western Electric NOS ST-14 \"Engraved Base\" 1930's - 1940 (4.1ma and 5ma) (close Gm)","description":"\u003cp\u003e1 pair) 244A Western Electric NOS ST-14 \"Engraved Base\" 1930's\u003c\/p\u003e\n\u003cp\u003e1 tube) 5.0ma Gm=900\u003c\/p\u003e\n\u003cp\u003esupport rods slightly tilted inside glass, but plate and cathode are perfectly centered\u003c\/p\u003e\n\u003cp\u003etilt does not effect tube performance\u003c\/p\u003e\n\u003cp\u003e1 tube) 4.1ma Gm=800\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eVplate=120V\u003c\/p\u003e\n\u003cp\u003eVgrid=-6V\u003c\/p\u003e\n\u003cp\u003eGood Ma = 4ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 890\u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003cp\u003e2V Filament\u003c\/p\u003e\n\u003cp\u003eDeveloped in 1929\u003c\/p\u003e\n\u003cp\u003eSuperb Sound with Mesh-Plate\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":869609037,"sku":"244Apair","price":279.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/244ap1.jpg?v=1571438847"},{"product_id":"copy-of-337a-we-large-punch-used-good-026-1950-on-base-but-date-is-probably-6026-1960-with-6-wiped-off-base-single","title":"337A WE \"large punch\" NOS 1966 slightly tilted glass (single)","description":"\u003cp\u003e1 tube) 337A WE \"large punch\" NOS 1966 slightly tilted glass (38\/21) in white box\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e337 specs: UX-6 base, gold-plated grid, Filament=10V @ 320ma, similar to a type 78\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":890036877,"sku":"337A","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/337a1966.jpg?v=1571438849"},{"product_id":"352a-we-nos-1964-pair","title":"(!) (Best Pair) 352A WE NOS 1964 original boxes (1 pair)","description":"\u003cp\u003e1 pair) 352A WE NOS 1964 \"D\" getter original boxes \u003c\/p\u003e\n\u003cp\u003e1 tube) 24\/16\u003c\/p\u003e\n\u003cp\u003e1 tube) 25\/16\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e(352A=Dual-Diode Triode, similar to 292A and 6R7G)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":949196145,"sku":"352Apair","price":144.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_15c14c93-fc13-479b-bac2-522520409d65.jpg?v=1703254974"},{"product_id":"copy-of-jan-cw-705a-we-nos-1940s-single","title":"JAN-CRP-705A Raytheon like new 1940's (single)","description":"\u003cp\u003e1 tube $25) JAN-CRP-705A Raytheon like new 1940's\u003c\/p\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003cp\u003ehalf-wave rectifier\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":963939836,"sku":"705A","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/705aray.jpg?v=1571438863"},{"product_id":"jan-cbop-705a-lewis-and-kaufman-nos","title":"(!) (Best Single) JAN-CBOP-705A Lewis and Kaufman NOS (64\/40)","description":"\u003cp\u003eJAN-CBOP-705A Lewis and Kaufman NOS original box\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e64\/40\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ehalf-wave rectifier\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":963940172,"sku":"705A","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_4388faa8-38b9-4e74-8e43-9861081ebbad.jpg?v=1626265039"},{"product_id":"copy-of-272a-western-electric-meshplate-used-good-1951-single-35-25","title":"(!!) (Good Value Pair) 272A Western Electric \"meshplate\" NOS and used\/good 1952-1954 (5.2ma and 5.6ma)","description":"\u003cp\u003e\u003cstrong\u003e1 pair) 272A WE \"meshplate\" NOS and used\/good in white boxes\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 5.2ma Gm=700 (439=1954) NOS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 5.6ma Gm=700 (252=1952) used\/good\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGeneral Information:\u003c\/p\u003e\nVfil=10V @ 320ma, Vplate=140V, Iplate=5.4ma, Mu=5.6, Gm=670, Rp=7400 ohms\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"272A WE 1952-1954","offer_id":996563868,"sku":"272a","price":289.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_2ce2322c-9387-430b-90cb-cba9ee8033ce.jpg?v=1649137481"},{"product_id":"272a-western-electric-meshplate-used-1963","title":"272A Western Electric \"meshplate\" used\/good 1963 (5.0ma Gm=600)","description":"\u003cp\u003e\u003cstrong\u003e272A WE \"meshplate\" used\/good (6313=1963) in white box\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5.0ma\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGm=600\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGeneral Information:\u003c\/p\u003e\nVfil=10V @ 320ma, Vplate=140V, Iplate=5.4ma, Mu=5.6, Gm=670, Rp=7400 ohms\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"272A WE 1963","offer_id":996570000,"sku":"272a","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_2cd6cdad-7b77-4e8b-a120-d44a5d3d9c50.jpg?v=1649137291"},{"product_id":"272a-western-electric-meshplate-pair-3","title":"(!!) (Recommended Pair) 272A Western Electric \"meshplate\" NOS and low hours\/like new 1940's - 1951 (6.3ma and 6.4ma)","description":"\u003cp\u003e\u003cstrong\u003e1 pair) 272A Western Electric \"meshplate\" in white boxes\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 6.4ma Gm=800 (1940's) used\/like new\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 6.3ma Gm=800 (126=1951) taller bottle - NOS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e- oldest pair\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGeneral Information:\u003c\/p\u003e\nVfil=10V @ 320ma, Vplate=140V, Iplate=5.4ma, Mu=5.6, Gm=670, Rp=7400 ohms","brand":"Tube World","offers":[{"title":"Default Title","offer_id":996571332,"sku":"272A","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_4ab39aa8-82e6-4da6-ac29-ea4d1cd7eb3e.jpg?v=1649136665"},{"product_id":"272a-western-electric-nos-meshplate-1961-and-1969-pair","title":"(!!) (BEST PAIR) 272A Western Electric NOS \"meshplate\" 1961 and 1969 (6.1ma and 6.4ma)","description":"\u003cp\u003e1 pair) 272A Western Electric NOS \"meshplate\" in original boxes\u003c\/p\u003e\n\u003cp\u003e1 tube) 6.1ma Gm=800 (6113=1961) brass pins \u003c\/p\u003e\n\u003cp\u003e1 tube) 6.4ma Gm=800 (6926=1969) nickel pins\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eNOS mA = 6mA \u003c\/p\u003e\n\u003cp\u003eNOS Gm = 800+\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eGeneral Information\u003c\/h1\u003e\nVfil=10V @ 320ma, Vplate=140V, Iplate=5.4ma, Mu=5.6, Gm=670, Rp=7400 ohms\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"272A WE PAIR","offer_id":996584648,"sku":"272a","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_85a61155-90de-4314-96ef-c032ead1a08b.jpg?v=1649136521"},{"product_id":"329a-western-electric-1972-p2","title":"329A Western Electric NOS 1972 (1 Pair: 33.6ma and 35.2ma)","description":"\u003cp\u003e\u003cspan\u003e1 \u003c\/span\u003epair) 329A Western Electric NOS 1972 large getters, original boxes\u003c\/p\u003e\n\u003cp\u003e1 tube) 33.6ma Gm=3150 (7213=1972) \"D\" getter halo\u003c\/p\u003e\n\u003cp\u003e1 tube) 35.2ma Gm=3150 (7239=1972) \"O\" getter halo\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=180V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-15V\u003c\/p\u003e\n\u003cp\u003eGood Ma range 29-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm range 2800-2900 \u003c\/p\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003eGeneral Information\u003c\/p\u003e\n\u003cp\u003e(329A=311A with a 7.5V filament)\u003c\/p\u003e\n\u003ch1\u003eGeneral Information\u003c\/h1\u003e\n\u003cp\u003e(329A=311A with a 7.5V filament)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"329A Western Electric 1972 Pair","offer_id":1011070872,"sku":"329A","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/329a10.jpg?v=1571438872"},{"product_id":"448a-western-electric-tipped-top-used-test-like-new-set-of-10","title":"(1 set of 10 tubes) 448A Western Electric \"TIPPED TOP\" used\/test like new 85-95% with \"D\" getter 1960's","description":"\u003cp\u003e1 set of 10 tubes) 448A WE \"TIPPED TOP\" used\/test like new 85-95% with \"D\" getter 1960's\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e10 tubes for $499.99\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003e1) 27.4ma Gm=27,200 (6552)\u003c\/p\u003e\n\u003cp\u003e1) 28.2ma Gm=25,200 (6552)\u003c\/p\u003e\n\u003cp\u003e1) 25.0ma Gm=25,800 (6539)\u003c\/p\u003e\n\u003cp\u003e1) 29.4ma Gm=27,100 (6526)\u003c\/p\u003e\n\u003cp\u003e1) 27.0ma Gm=26,600 (6552)\u003c\/p\u003e\n\u003cp\u003e1) 25.8ma Gm=25,300 (6552)\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1) 30.0ma Gm=27,100 (6526)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e1) 31.4ma Gm=27,700 (6552)\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e1) 27.0ma Gm=27,300 (6552)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e1) 25.0ma Gm=26,000 (6552)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1014055336,"sku":"448A","price":499.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/448atipln.jpg?v=1571438872"},{"product_id":"copy-of-448a-western-electric-smooth-top-used-test-like-new-85-95-output-with-o-getter-1968-1976-10-for-450-unmatched","title":"(1 set of 10 tubes) 448A Western Electric \"SMOOTH TOP\" used\/test like new\/85-95% output with \"D\" getter 1960-1971","description":"\u003cp\u003e1 set of 10 tubes) 448A WE \"SMOOTH TOP\" used\/test like new\/85-95% output with \"D\" getter 1960-1971\u003c\/p\u003e\n\u003cp\u003e$399.99 for 10 tubes\u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003e1) 25ma Gm=25,500\u003c\/p\u003e\n\u003cp\u003e1) 23ma Gm=25,600\u003c\/p\u003e\n\u003cp\u003e1) 26ma Gm=24,000\u003c\/p\u003e\n\u003cp\u003e1) 23.2ma Gm=23,500\u003c\/p\u003e\n\u003cp\u003e1) 27ma Gm=24,600\u003c\/p\u003e\n\u003cp\u003e1) 25.5ma Gm=23,600\u003c\/p\u003e\n\u003cp\u003e1) 27ma Gm=24,600\u003c\/p\u003e\n\u003cp\u003e1) 22.6 Gm=25,300\u003c\/p\u003e\n\u003cp\u003e1) 26.2ma Gm=29,100\u003c\/p\u003e\n\u003cp\u003e1) 25ma Gm=25,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eVplate=135V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-2\u003c\/p\u003e\n\u003cp\u003eGood Ma range 20-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 23,000 - 27,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1014163280,"sku":"448A","price":399.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/448adln.jpg?v=1571438872"},{"product_id":"448a-western-electric-smooth-top-used-very-good-with-o-getter-1971-1972-1-pair","title":"(!!!) (Best Pair #2) 448A Western Electric \"tipped top\" used\/tests like new D getter halo 1965-1966 reboxed (30ma and 31.8ma) (close Gm matching)","description":"\u003cp\u003e1 pair) 448A WE \"tipped top\" used\/tests like new D getter halo 1965-1966 reboxed\u003c\/p\u003e\n\u003cp\u003e1 tube) 30.0ma Gm=26,800 1965\u003c\/p\u003e\n\u003cp\u003e1 tube) 31.8ma Gm=26.600 1966\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAmplitrex Test Data:\u003c\/p\u003e\n\u003cp\u003eVplate=135V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-2.5V\u003c\/p\u003e\n\u003cp\u003eGood Ma range 18-25ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 25,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDIY pentode\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1015038916,"sku":"448Apair","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/448ap6_778f75f2-3649-49de-a7fe-814e3c4b66c3.jpg?v=1571438872"},{"product_id":"copy-of-448a-western-electric-smooth-top-used-very-good-with-o-getter-1971-1972-1-pair","title":"(!!) (Recommended Pair) 448A Western Electric tipped top used\/good 1965 same date codes (26ma and 27.5ma) (close Gm matching)","description":"\u003cp\u003e1 pair) 448A Western Electric tipped top used\/good 1965 same date codes\u003c\/p\u003e\n\u003cp\u003e1 tube) 27.5ma Gm=26,700\u003c\/p\u003e\n\u003cp\u003e1 tube) 26.0ma Gm=26,500\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAmplitrex Test Data:\u003c\/p\u003e\n\u003cp\u003eVplate=135V\u003c\/p\u003e\n\u003cp\u003eVscreen=135V\u003c\/p\u003e\n\u003cp\u003eVgrid=-2\u003c\/p\u003e\n\u003cp\u003eGood Ma range 20-30ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 23,000 - 27,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDIY pentode\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1015040340,"sku":"448Apair","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/448ap5.jpg?v=1571438873"},{"product_id":"101l-western-electric-nos-1961","title":"1.3.25 101L Western Electric NOS 1961 (5.3ma Gm=1000)","description":"\u003cp\u003e1 tube) 101L Western Electric ST-14 NOS\/75-80% in white box (6113=1961)\u003c\/p\u003e\n\u003cp\u003e5.3ma\u003c\/p\u003e\n\u003cp\u003eGm=1000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGood NOS Ma range = 6-6.8ma\u003c\/p\u003e\n\u003cp\u003eGood NOS Gm range = 800-1000\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1110969636,"sku":"101L","price":89.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_f357a3bc-b57a-460b-962a-e4a623a76d89.jpg?v=1581630566"},{"product_id":"copy-of-102f-st-14-northern-electric-top-printing-nos-around-1943-1945-original-box-17-14-recommended","title":"102F WE Tennis Ball display tube - does not work","description":"1 display tube) 102F WE Tennis Ball 1920's large getter, very good condition but does not work - open filament","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1110994928,"sku":"102F","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/102fopen.jpg?v=1571438894"},{"product_id":"408a-western-electric-used-good-pair-1","title":"(1 PAIR) 408A Western Electric used\/good 1964 (79\/60 and 78\/60)","description":"\u003cp\u003e1 pair) 408A Western Electric used\/good 1964\u003c\/p\u003e\n\u003cp\u003e1 tube) 79\/60\u003c\/p\u003e\n\u003cp\u003e1 tube) 78\/60\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eTested on B\u0026amp;K\u003c\/p\u003e\n\u003cp\u003eabove 70 is good\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e20V Filament\u003c\/p\u003e\n\u003cp\u003e- Yamamoto HA-02 Headphone Amp\u003cbr\u003e- Little Dot Hybrid I+\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1111695148,"sku":"408Apr","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_c7e136a8-b18d-4150-a0f8-096401088e34.jpg?v=1681400409"},{"product_id":"copy-of-usn-cw-244a-western-electric-nos-1952-1-pair","title":"(!) 244A Western Electric NOS 1952 smaller side getter (4.4ma)","description":"\u003cp\u003e1 tube) USN-CW-244A WE NOS (203=1952) smaller side getter in original box\u003c\/p\u003e\n\u003cp\u003e4.4ma\u003c\/p\u003e\n\u003cp\u003eGm=900\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGood Ma = 4\u003c\/p\u003e\n\u003cp\u003eGood Gm = 800-900\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eUSN=US Navy\u003c\/p\u003e\n\u003cp\u003eCW=control-wave\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1131493324,"sku":"244A","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/244a1.jpg?v=1571438898"},{"product_id":"257a-western-electric-engravased-base-nos-1930s","title":"257A Western Electric engraved base NOS 1930's (6 in stock) (257A is a  231D with a top cap grid connection)","description":"\u003cp\u003e6) 257A WE \"engraved base\" NOS with tube data sheets, around 1940\u003c\/p\u003e\n\u003cp\u003e$125 each\u003c\/p\u003e\n\u003cp\u003e2 for $225\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(257A=231D with top cap for grid connection)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":1131499720,"sku":"257Aeng","price":125.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/257aeng.jpg?v=1571438898"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/collections\/western-coll-172.jpg?v=1389474925","url":"https:\/\/tubeworldexpress.com\/collections\/western-electric\/three-element-double-gap-cold-cathode-triode.oembed","provider":"Tube World Express","version":"1.0","type":"link"}