{"title":"All other tubes","description":"","products":[{"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":"em4-miniwatt-holland-tuning-eye","title":"EM4 Miniwatt Holland NOS 1950's (2 in stock)","description":"\u003cp\u003e2) EM4 Miniwatt Holland gold coated glass - original boxes 1950's\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ebright eyes\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":483332401,"sku":"EM4","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/em4mini2.jpg?v=1571438753"},{"product_id":"6bl7gta-ge-nos-p10","title":"(!!!) (Recommended Pair) 6BL7GTA GE and GE branded Admiral 1960's (38\/40ma and 35\/45ma)","description":"\u003cp\u003e\u003cstrong\u003e1 pair) 6BL7GTA GE NOS 1960's same build\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 38\/40ma Gm=7300\/7400 (GE branded Admiral 1964)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 35\/45ma Gm=7200\/8100 (GE 1960's) smaller top getter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMatched on Amplitrex\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003e- Single Power MPX3 SE\u003cbr\u003e- Cary 1610se\u003c\/p\u003e\n(Vfil=6.3V @ 1.5A, Vplate max=500V, Iplate max=60ma, Pout max = 12 watts total for both triode sides)\u003cbr\u003eThe 6BL7GTA is interchangeable with a 6BL7GT but differs from it in having\u003cbr\u003ean improved section 1 for increased life as an oscillator, and controlled zero-bias\u003cbr\u003eplate current in both sections\u003cbr\u003eTypical Characteristics Class A Amp:\u003cbr\u003eVplate= 250V\u003cbr\u003eIplate= 42ma\u003cbr\u003eVgrid= -9\u003cbr\u003eRp= 2150 ohms\u003cbr\u003eMu= 15\u003cbr\u003eGm= 6200 for 6BL7 (RCA manual 1953) and 7000 mhos for 6BL7GTA (GE Manual 1957)\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"6BL7GTA GE pair","offer_id":495432845,"sku":"6BL7GTApr","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_95816ef7-b744-48fe-a722-e8970874a7e8.jpg?v=1571956641"},{"product_id":"6bx7gt-sylv1","title":"(!!!) (Best Single) 6BX7GT Sylvania \"O\" getter NOS 1960's (73.6ma\/83.3ma)","description":"\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003e1 tube) 6BX7GT Sylvania \"O\" getter NOS 1960's\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003e1 section) 73.6ma Gm=9300\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff2a00;\"\u003e1 section) 83.3ma Gm=9900\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eTested on Amplitrex\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eGood Ma range 38-45ma\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eGood Gm range = 7000-7500\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003e- Single Power\u003c\/p\u003e\n\u003cp\u003e(Vfil=6.3V @ 1.5A, Vplate max=500V, Iplate max=60ma, Pout max = 12 watts total for both triode sides)\u003cbr\u003eTypical Characteristics Class A Amp:\u003cbr\u003eVplate= 250V\u003cbr\u003eIplate= 42ma\u003cbr\u003eVgrid= \u003cbr\u003eRp= 1300 ohms\u003cbr\u003eMu= 10\u003cbr\u003eGm= 7600 mhos\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"6BXGT Sylvania NOS 1950's","offer_id":495664789,"sku":"6BXGT","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_e1331974-48aa-440d-bcb3-12192a479be2.jpg?v=1761417098"},{"product_id":"6dj8-telefunken-1967","title":"6DJ8 Telefunken Germany \u003c\u003e bottom used\/good 1967 (13.5\/14.0ma)","description":"\u003cp\u003e\u003cstrong\u003e1 tube) \u003c\/strong\u003e\u003cstrong\u003e6DJ8 Telefunken Germany \u0026lt;\u0026gt; bottom 1967 used\/good in white box\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ein white box\u003c\/li\u003e\n\u003cli\u003eSmall \"o\" getter halo\u003c\/li\u003e\n\u003cli\u003egray shield between plates\u003c\/li\u003e\n\u003cli\u003eLow noise and not microphonic\u003c\/li\u003e\n\u003cli\u003every smooth and sweet sounding 6DJ8\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003e1 section) 14.0ma Gm=9500\u003c\/p\u003e\n\u003cp\u003e1 section) 13.5ma Gm=8500\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGood used Ma range 10-12ma\u003c\/p\u003e\n\u003cp\u003eGood used Gm 9000 - 10,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eRecommended for\u003c\/p\u003e\n\u003cp\u003e- Manley Chinook\u003cbr\u003e- Scott Nixon DAC\u003cbr\u003e- Rode K2 mic\u003cbr\u003e- Sunfire Classic Vacuum Tube Control Center \u003cbr\u003e- Woo Audio WA3+\u003cbr\u003e- Pathos Classic One MK III preamp\u003cbr\u003e- Audio Horizons phono\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Tube World","offers":[{"title":"6DJ8 Telefunken used 1967","offer_id":496506137,"sku":"6DJ8tele","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_c502936c-0f5a-4b40-b4be-248e6b04f7d2.jpg?v=1571438756"},{"product_id":"gb-5931-sylvania-brown-base-gold-brand-1960s","title":"(!!!!) (READ REVIEW) GB-5931 Sylvania brown base gold brand 1960's (60\/40 and 65\/40)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\" color=\"#ff0000\"\u003eGB-5931 Sylvania brown base gold brand 1960's\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e60\/40\u003c\/p\u003e\n\u003cp\u003e65\/40\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(128, 255, 0);\"\u003e\u003cstrong\u003e5931 is a premium 5U4WGB (5U4GB)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003e5931 is a premium 5U4GB\u003c\/p\u003e\n\u003cp\u003e- SET amps\u003cbr\u003e- Wright Sound SET\u003cbr\u003e- Audio Note P4 Balanced mono amps\u003cbr\u003e- Dared MCP7 preamp with phono\u003cbr\u003e- Singlepower\u003cbr\u003e- Modwright Transporter\u003cbr\u003e- Donald North Audio\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"GB-5931 Sylvania brown base gold brand 1960's","offer_id":499926489,"sku":"5931_1955","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_b1e7ca1c-4445-4fdb-820d-2006f11c4005.jpg?v=1715180231"},{"product_id":"ef86-valvo-germany-branded-siemens-nos-1965-p1","title":"(!!!!!) (Best Pair) EF86 Siemens Germany made by Valvo (Hamburg) NOS 1965 (3.4ma\/3.4ma) 1-2% matched","description":"\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e \u003cstrong\u003e1 Matched Pair) EF86 Siemens Germany made by Valvo NOS 1965 (Hamburg plant)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e1 tube) 3.4ma Gm=2100\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e1 tube) 3.4ma Gm=2200 \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eGood Ma range 2.5-3.5ma\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eGood Gm range 1800-2200\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch1\u003e \u003c\/h1\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003e- Vox AC10, AC30\u003cbr\u003e- Dr. Z Z-28\u003cbr\u003e- Vox AC15HTVH head (install all Mullard tubes: EF86, 12AX7, EZ81, EL84)\u003cbr\u003e- Eastern Electric M520\u003cbr\u003e- Matchless C-30, SC30\u003cbr\u003e- Bottlehead\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"EF86 Siemens Germany made by Valvo NOS 1965","offer_id":506082589,"sku":"ef86p1","price":138.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_8d321b95-618a-4798-a367-a0e8e7784473.jpg?v=1747775511"},{"product_id":"6bl7gta-sylvania-nos-pair-1a","title":"(!!!) (Best Pair) 6BL7GTA Sylvania branded GE NOS 1967-1968 (42.5\/39.5ma and 40.2\/43.2ma)","description":"\u003cp\u003e1 matched pair) 6BL7GTA Sylvania branded GE NOS 1967-1968\u003c\/p\u003e\n\u003cp\u003e1 tube) 42.5ma\/39.5ma Gm=7500\/7400 \u003c\/p\u003e\n\u003cp\u003e1 tube) 40.2ma\/43.2ma Gm=7600\/7950\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=250V\u003c\/p\u003e\n\u003cp\u003eVgrid=-9V\u003c\/p\u003e\n\u003cp\u003eGood Ma = 32-40ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 6200 - 7000\u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003e- Single Power MPX3 SE\u003cbr\u003e- Cary 1610se\u003c\/p\u003e\n\u003cp\u003e(Vfil=6.3V @ 1.5A, Vplate max=500V, Iplate max=60ma, Pout max = 12 watts total for both triode sides)\u003cbr\u003eThe 6BL7GTA is interchangeable with a 6BL7GT but differs from it in having\u003cbr\u003ean improved section 1 for increased life as an oscillator, and controlled zero-bias\u003cbr\u003eplate current in both sections\u003cbr\u003eTypical Characteristics Class A Amp:\u003cbr\u003eVplate= 250V\u003cbr\u003eIplate= 42ma\u003cbr\u003eVgrid= -9\u003cbr\u003eRp= 2150 ohms\u003cbr\u003eMu= 15\u003cbr\u003eGm= 6200 for 6BL7 (RCA manual 1953) and 7000 mhos for 6BL7GTA (GE Manual 1957)\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"6BL7GTA Sylvania NOS pair","offer_id":506538101,"sku":"6BL7GTApr","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/3_a6b9c9ce-8e94-4595-9b12-862a0da5d142.jpg?v=1773691979"},{"product_id":"5881-tungsol-branded-cbs-nos","title":"(!!!!) (Best Single #1) 5881 Tungsol branded CBS NOS 1961 (88ma)","description":"\u003cp\u003e5881=6L6WGB Tungsol branded CBS NOS 1961 in white box\u003c\/p\u003e\n\u003cp\u003e88ma\u003c\/p\u003e\n\u003cp\u003eGm=6300\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eGood Ma range 55-70ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 4500-6000\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","brand":"Tube World","offers":[{"title":"Default Title","offer_id":506808045,"sku":"5881ts","price":138.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/6_75f284c3-e554-41b1-93e1-6e3f629e6279.jpg?v=1780675185"},{"product_id":"6an8a-rca-nos-p2","title":"(!!!) (Best Pair) 6AN8A RCA Motorola NOS 1973 (17.6\/14.6ma and 16.5\/15.6ma)","description":"\u003cp\u003e1 pair) 6AN8A Motorola RCA NOS original boxes 1973\u003c\/p\u003e\n\u003cp\u003e1 tube) 17.6ma Gm=4900 and 14.6ma Gm=9800\u003c\/p\u003e\n\u003cp\u003e1 tube) \u003cspan\u003e16.5ma Gm=4700 and 15.6ma Gm=10,300\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMatched on Amplitrex\u003c\/p\u003e\n\u003cp\u003eGood Ma\/Gm (triode) = 13-15ma and Gm= 3800-4500\u003c\/p\u003e\n\u003cp\u003eGood Ma\/Gm (pentode) =  11-12ma Gm=7000-7500\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":507502125,"sku":"6AN8Apair","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_b73d04c0-6832-43be-adf0-78271896afa3.jpg?v=1752871288"},{"product_id":"ez80-6v4-philips-miniwatt-sittard-holland-large-d-getter-nos-1957","title":"(!!!!) (Best Holland Single) EZ80=6V4 Philips Miniwatt Sittard Holland large \"D\" getter NOS 1957 (64\/40 and 64\/40)","description":"\u003cp\u003eEZ80=6V4 Philips Miniwatt Sittard Holland large \"D\" getter NOS 1957\u003c\/p\u003e\n\u003cp\u003e64\/40\u003c\/p\u003e\n\u003cp\u003e64\/40\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on TV-7D\/U\u003c\/p\u003e\n\u003cp\u003e   \u003c\/p\u003e\n\u003cp\u003e- US Thomas Organ VOX Pathfinder model V1(01) 1965\u003cbr\u003e- Border Patrol S10 300B amp\u003cbr\u003e- AMR CD-77 CD PLAYER\u003cbr\u003e- Counterpoint\u003cbr\u003e- Woo WA2\u003cbr\u003e- Fisher 20-A amp\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"EZ80=6V4","offer_id":508175769,"sku":"6V4","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_f029da45-59b8-4b9c-9be3-38953abe66e4.jpg?v=1759595269"},{"product_id":"copy-of-5z3g-rca-nos-1950","title":"(!!) 5Z3G Westinghouse NOS 1957 (59\/40 and 61\/40)","description":"\u003cp\u003e1 tube) 5Z3G Westinghouse NOS 1957 small dimple in glass near top of tube in white box\u003c\/p\u003e\n\u003cp\u003e59\/40\u003c\/p\u003e\n\u003cp\u003e61\/40\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":512638193,"sku":"5Z3Gwest","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_6a18bf9a-1a90-4925-a234-0dea6748a82a.jpg?v=1571438767"},{"product_id":"um4-adzam-nos-1950-s","title":"UM4 Adzam NOS tuning eye 1950's (5 in stock)","description":"\u003cp\u003e5) UM4 Adzam NOS 1950's\u003c\/p\u003e\n\u003cp\u003etuning eye\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":515394633,"sku":"um4","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_7d191efb-0309-45aa-95ce-7103eb5b91cb.jpg?v=1698382352"},{"product_id":"6v6gt-metro-holland-nos-1960s-unknown-maker","title":"(!!) 6V6GT Metro Holland NOS 1960's unknown maker (49ma)","description":"\u003cp\u003e1 tube) 6V6GT Metro Holland NOS 1960's unknown maker\u003c\/p\u003e\n\u003cp\u003e49ma\u003c\/p\u003e\n\u003cp\u003eGm=4750 (high Gm)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e- Fender Musicmaster Bass Guitar 1970\u003cbr\u003e- Fender Champion 600 (new)\u003cbr\u003e- Fender Tweed Champ 1960\u003cbr\u003e- Victoria Amp Model # 20122\u003cbr\u003e- Fender 57 Champ Reissue\u003cbr\u003e- Fender Deluxe 1963\u003cbr\u003e- Fender Tweed Champ with 5F1 circuit\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"6V6GT Metro Holland NOS 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(Best Single) EF86 Mullard UK branded Philips Miniwatt \"D\" getter NOS 1954-1955 (3.3ma, Gm=2100) (oldest single)","description":"\u003cp\u003eEF86 Mullard UK branded Philips Miniwatt \"D\" getter NOS 1954-1955 (1st version made)\u003c\/p\u003e\n\u003cp\u003e3.3ma\u003c\/p\u003e\n\u003cp\u003eGm=2200\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003e- Eastern Electric M520\u003c\/p\u003e\n\u003cp\u003e- Shindo\u003c\/p\u003e\n\u003cp\u003e- Vox AC10, AC30\u003c\/p\u003e\n\u003cp\u003e- Dr. Z Z-28\u003c\/p\u003e\n\u003cp\u003e- Vox AC15HTVH head\u003c\/p\u003e\n\u003cp\u003e- Matchless C-30, SC30\u003c\/p\u003e\n\u003cp\u003e- Bottlehead  \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"EF86 Mullard NOS","offer_id":572150025,"sku":"ef86mull","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/3_ccc1a7e2-20cd-4066-880d-4110e8fa5969.jpg?v=1772666860"},{"product_id":"6l6wgb-5881-sylvania-v1","title":"(!) (Single) 6L6WGB=5881 Sylvania black base NOS 1975 (78.5ma)","description":"\u003cp\u003e6L6WGB=5881 Sylvania black base NOS 1975 in white box\u003c\/p\u003e\n\u003cp\u003e78.5ma\u003c\/p\u003e\n\u003cp\u003eGm=6000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGood NOS mA range 60-70ma\u003c\/p\u003e\n\u003cp\u003eGood NOS Gm range 5500-6000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003erecommended for:\u003cbr\u003e\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\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"5881 Sylvania","offer_id":582312701,"sku":"5881pair","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_a1d2c915-dacc-4127-bd4f-63cd180e1411.jpg?v=1752554497"},{"product_id":"gift-card","title":"Gift Card","description":"\u003cp\u003eShopping for someone else but not sure what to give them?\nGive them the gift of choice with a Tube World Express Gift Card.\u003c\/p\u003e\n\n\u003cp\u003eGift cards are delivered by email and contain instructions to redeem them at checkout.\nOur gift cards have no additional processing fees.\u003c\/p\u003e\n","brand":"Tube World Express","offers":[{"title":"$10.00","offer_id":585446645,"sku":"","price":10.0,"currency_code":"USD","in_stock":true},{"title":"$25.00","offer_id":585446649,"sku":"","price":25.0,"currency_code":"USD","in_stock":true},{"title":"$50.00","offer_id":585446653,"sku":"","price":50.0,"currency_code":"USD","in_stock":true},{"title":"$100.00","offer_id":585446657,"sku":"","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/e38bd83af578077b65a31424bd24d085.png?v=1571438792"},{"product_id":"jan-5687wa-sylvania-nos-1967","title":"(!!!!) (Best Single) JAN-5687WA Sylvania NOS 1967 (38\/39ma) (Highest Ma and Gm)","description":"\u003cp\u003e1 low noise tube) JAN-5687WA Sylvania NOS 1967\u003c\/p\u003e\n\u003cp\u003e38ma Gm=12,300\u003c\/p\u003e\n\u003cp\u003e39ma Gm=12,400\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003eManley\u003c\/p\u003e\n\u003cp\u003eModwright\u003c\/p\u003e\n\u003cp\u003eAudio Note\u003c\/p\u003e\n\u003cp\u003eRay Samuels\u003c\/p\u003e\n\u003cp\u003eAyon\u003c\/p\u003e\n\u003cp\u003eKondo\u003c\/p\u003e\n\u003cp\u003eMastersound\u003c\/p\u003e\n\u003cp\u003eAudio Thrills\u003c\/p\u003e\n\u003cp\u003eLoth\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"JAN-5687WA Sylvania NOS 1967","offer_id":595096833,"sku":"5687WA","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_413530d7-90be-4131-aca4-b0682c6d9ef7.jpg?v=1740522597"},{"product_id":"e180cc-7062-philips-miniwatt-ibm-holland-low-hours-tests-good-o-getter-halo-1961-very-good-condition","title":"(!!) E180CC=7062 Philips Miniwatt IBM Holland low hours\/tests good O getter halo 1961 (6.0\/6.2ma)","description":"\u003cp\u003e1 low noise tube) E180CC=7062 Philips Miniwatt IBM Holland low hours\/tests good O getter halo 1961 very good condition\u003c\/p\u003e\n\u003cp\u003e6.0ma Gm=4800\u003c\/p\u003e\n\u003cp\u003e6.2ma Gm=5100\u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=150V\u003c\/p\u003e\n\u003cp\u003eVgrid=-9V\u003c\/p\u003e\n\u003cp\u003eGood used Ma= 6-7ma\u003c\/p\u003e\n\u003cp\u003eGood NOS Gm = 5000-6000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e- Experience Music DM70 amp\u003cbr\u003e- Aria WV5XL phono preamp Mike Elliott design 2008\u003cbr\u003e- Eastern Electric Mini-Max\u003cbr\u003e- Conrad Johnson P45 amplifier 1980's\u003cbr\u003e- Exemplar\u003cbr\u003e- Berning\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":596162749,"sku":"7062_ibm","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/7062ibm.jpg?v=1571438794"},{"product_id":"el84-tesla-nos-1980-s-p1","title":"(!!!) (~ Best Value Pair ~) EL84 Tesla NOS 1980's no printing (44.5ma and 44ma) 1% matched","description":"\u003cp\u003e1 pair) EL84 Tesla Czech Republic NOS 1980's no printing - reboxed\u003c\/p\u003e\n\u003cp\u003e1 tube) 44.5ma Gm=10,400\u003c\/p\u003e\n\u003cp\u003e1 tube) 44.0ma Gm=10,400\u003c\/p\u003e\n\u003cp\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":617747981,"sku":"el84teslap1","price":48.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/el84tesla.jpg?v=1571438801"},{"product_id":"7308-sylv1","title":"(!!!!) (Best Value) 7308 Sylvania branded RCA NOS 1973 (13.2\/17.2ma)","description":"\u003cp\u003e1 low noise tube) 7308 Sylvania branded RCA NOS 1973\u003c\/p\u003e\n\u003cp\u003e1 section) 13.2ma Gm=12,300\u003c\/p\u003e\n\u003cp\u003e1 section) 17.2ma Gm=13,800\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(quiet, smooth 7308, best value)\u003cbr\u003e\u003cbr\u003e- Ah!Tjoeb CD player\u003cbr\u003e- Raysonic 128 CDP\u003cbr\u003e- Earmax Silver Edition\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":618766881,"sku":"7308syl","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_57e9f804-e2e5-4388-9114-0c91d258afdf.jpg?v=1761418195"},{"product_id":"0c3-p5","title":"(!!) (Recommended Pair) 0C3 Sylvania NOS 1953-1970 same build (argon)","description":"\u003cp\u003e1 pair) 0C3 Sylvania NOS 1953-1970 same build\u003c\/p\u003e\n\u003cp\u003e1 tube) slightly taller - green print\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e- Bottlehead Foreplay III\u003c\/p\u003e\n\u003cp\u003e- Manley NeoClassic 300B\u003c\/p\u003e\n\u003cp\u003e- Decware\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":628026501,"sku":"0C3pr","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/3_1_3094785d-0619-41ce-aacb-7c481667846a.jpg?v=1768257097"},{"product_id":"12au7a-rca-clear-top-1964","title":"(!!) 12AU7A RCA clear top used\/good 1964 (8.2\/8.6ma)","description":"\u003cp\u003e1 low noise tube) 12AU7A RCA clear top used\/good 1964 (AG)\u003c\/p\u003e\n\u003cp\u003e8.2ma Gm=1700\u003c\/p\u003e\n\u003cp\u003e8.6ma Gm=1900\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\u003eGood used Ma range 7-9ma\u003c\/p\u003e\n\u003cp\u003eGood used Gm range 1600-1800\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e- the best sounding US made 12AU7A\u003c\/p\u003e\n\u003cp\u003e- the 5814A RCA is also good from 1959-1975\u003c\/p\u003e\n\u003cp\u003e- also consider subs 5814A and 6189 RCA\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e- Cayin MT-35 Integrated amp\u003cbr\u003e- Rogue Audio Cronus\u003cbr\u003e- Rogue audio Perseus + Rogue audio stereo 90, \u003cbr\u003e- Sun Audio 1000\u003cbr\u003e- CJ PV10\u003cbr\u003e- VTL 7.5 Series II\u003cbr\u003e- Ampeg\u003cbr\u003e- Aguilar DB750 driver tube\u003cbr\u003e- Odyssey Kandela preamp\u003cbr\u003e- David Berning ZOTL Pre One Audio Preamplifier\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":634948049,"sku":"12au7a","price":29.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_4e4b9de2-4636-48a8-8c11-c878025c4e20.jpg?v=1634861963"},{"product_id":"el34-telefunken-germany-used-good-single-1","title":"(!!) EL34 Telefunken Germany used\/good\/75% 1967-1971 in white box (62ma)","description":"\u003cp\u003e1 tube) EL34 Telefunken West Germany used\/good\/75% 1967-1971 in white box\u003c\/p\u003e\n\u003cp\u003e62ma\u003c\/p\u003e\n\u003cp\u003eGm=9500\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\u003eGood NOS Ma = 80ma\u003c\/p\u003e\n\u003cp\u003eGood used Gm = 9000 - 10,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":650859537,"sku":"el34tele","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_43530966-1759-497b-9662-ee0d7dffb080.jpg?v=1571438805"},{"product_id":"0b2-valvo-germany-like-new-in-white-boxes-1960-era-neon-gas","title":"(!) 0B2=108C1 Valvo Germany like new in white boxes 1960 era (neon gas)","description":"1 pair) 0B2=108C1 Valvo Germany like new in white boxes 1960 era (neon gas)","brand":"Tube World","offers":[{"title":"Default Title","offer_id":663654025,"sku":"0B2pr","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_3e39263b-329d-4282-bc03-56a41c1f6dd1.jpg?v=1643468497"},{"product_id":"1608-rca-ceramic-base-nos-1940-era","title":"1608 RCA white ceramic base NOS in white box 1940 era (32.5ma)","description":"\u003cp\u003e1 tube) 1608 RCA white ceramic base NOS in white box 1940 era\u003c\/p\u003e\n\u003cp\u003eVplate=350V, Vgrid=-10V Iplate=32.5ma Gm=5400 (NOS = 36ma) 1937 RCA data sheet\u003c\/p\u003e\n\u003cp\u003eVplate=425V, Vgrid=-15V Iplate=29.2ma Gm=5100 (NOS = 30ma) 1937 RCA data sheet\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003e1 TUBE, NOT A PAIR \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e1608=801 specs with mu raised to 20 versus 801\/801A mu = 8\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e1608 has a 2.5V filament, 801 and 801A has a 7.5V filament\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e1608: quick heating filament: 2.5V filament @ 2.5amps\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":664787661,"sku":"1608rca","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1608a.jpg?v=1571438807"},{"product_id":"6as11","title":"6AS11 GE branded Dumont NOS (1 in stock)","description":"\u003cp\u003e1) 6AS11 GE branded Dumont NOS\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTriode\/Pentode \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e12 pins\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":668938153,"sku":"6AS11","price":4.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_a3246832-e8f6-4228-a5f5-3d2a292eb62b.jpg?v=1571438809"},{"product_id":"6lu8-sylvania-used","title":"6LU8 Sylvania used\/good 1969 (1.7\/61ma)","description":"\u003cp\u003e6LU8 Sylvania used\/good 1969\u003c\/p\u003e\n\u003cp\u003e1 section) 1.7ma Gm=2900\u003c\/p\u003e\n\u003cp\u003e1 section) 61ma Gm=8300\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003esection 1) Good Ma=2ma Good Gm=3000-3500\u003c\/p\u003e\n\u003cp\u003esection 2) Good Ma=50-55 Good Gm=8000-9000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":668939317,"sku":"6LU8used","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_f8a695eb-7e35-4931-bb53-56b3ae9ff9fa.jpg?v=1643490785"},{"product_id":"826-ken-rad-nos-1942-pair","title":"(!!!) (Best Pair) 826 Ken Rad NOS 1942 same date codes original boxes strong emission","description":"\u003cp\u003e1 matched pair) 826 Ken Rad NOS 1942 same date codes (K3) original boxes\u003c\/p\u003e\n\u003cp\u003e1) 54\/30\u003c\/p\u003e\n\u003cp\u003e1) 51\/30\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e- strong emission and bright filaments\u003c\/p\u003e\n\u003cp\u003e- excellent pair\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":674036321,"sku":"826pr","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_203d1754-6d06-4ea8-8b13-2cd6243bbe8c.jpg?v=1618424887"},{"product_id":"e80f-6084-miniwatt-sq-holland-special-quality-gold-pins-d-getter-nos-1960-single","title":"(!!!) (Best Overall Single) E80F=6084 Miniwatt SQ Holland Special Quality Gold Pins \"D\" getter NOS 1960 (3.2ma)","description":"\u003cp\u003eE80F=6084 Miniwatt SQ Holland Special Quality Gold Pins \"D\" getter NOS 1960\u003c\/p\u003e\n\u003cp\u003e(3.2ma Gm=1800)\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=100V\u003c\/p\u003e\n\u003cp\u003eVgrid=-2\u003c\/p\u003e\n\u003cp\u003eGood Ma = 3ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 1700-1800\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eE80F=6084 Holland (sub for EF86)\u003cbr\u003e(clear and lively upper midrange, gold pins, tall bottle, 10,000 hours rated life)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cpre wrap=\"\"\u003eStellar CM6 tube mic\u003c\/pre\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":674059025,"sku":"e80f","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/e80f60.jpg?v=1571438810"},{"product_id":"0c3-rca-pair-2","title":"0C3 RCA used\/test like new 1951 (1 Pair)","description":"\u003cp\u003e1 pair) 0C3 RCA used\/test like new 1951 (1-17) (argon)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(0C3=voltage regulator; 105V @ 5-30ma)\u003cbr\u003e\u003cbr\u003e- Tube Research Dude preamp\u003cbr\u003e- Decware\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":677488441,"sku":"0C3","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_307c9f93-16fd-4e94-aa58-a729533c676e.jpg?v=1702185293"},{"product_id":"6sn7gt-rca-used-good-1953","title":"(!!) 6SN7GT RCA used\/good 1953 (6.6\/7.6ma)","description":"\u003cp\u003e1 low noise tube) 6SN7GT RCA used\/good 1953 in WB\u003c\/p\u003e\n\u003cp\u003e1 section) 6.6ma Gm=2300\u003c\/p\u003e\n\u003cp\u003e1 section) 7.6ma Gm=2300\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003erecommended for:\u003c\/p\u003e\n\u003cp\u003e- Conrad-Johnson CAV-50 intergrated amp\u003cbr\u003e- Atma-Sphere MA-1 Mk II.2 Amplifier \u003cbr\u003e- Antique Sound Lab AQ1006 Mono Block amps\u003cbr\u003e- CARY preamps and amps\u003cbr\u003e- Rogue Metis 2004\u003cbr\u003e- Wright Sound\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"6SN7GT RCA 1953","offer_id":680871725,"sku":"6SN7GT","price":29.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_ef3ea1d2-cab2-4e80-a6b4-fc7c5d497bd1.jpg?v=1574459250"},{"product_id":"8233-e55l-power-pentode-magnoval-base-1-pair","title":"E55L=8233 Mullard branded Philips NOS 1967 (59ma)","description":"\u003cp\u003e1 tube) E55L=8233 Mullard branded Philips NOS 1967\u003c\/p\u003e\n\u003cp\u003e59ma\u003c\/p\u003e\n\u003cp\u003eGm=44,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGood Ma = 50-55ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 40,000 - 45,000\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(6.3V @ 600ma, 10 watts) (similar electrically to 8608)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e- ALLNIC preamp\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":686584365,"sku":"E55L","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/1_8a71cf1d-16fc-4ec6-b922-d3e45a854ff9.jpg?v=1571438813"},{"product_id":"6350-rca-nos-rebranded-united-triple-mica-u-getter-1950s-v7","title":"(!!) (Recommended Single) 6350 RCA NOS rebranded United triple mica \"U\" getter halo 1950's (9\/9.6ma)","description":"\u003cp\u003e1 tube) 6350 RCA NOS rebranded United triple mica \"U\" getter halo 1950's copper grid posts\u003c\/p\u003e\n\u003cp\u003e1 section) 9.6ma Gm=4400\u003c\/p\u003e\n\u003cp\u003e1 section) 9.0ma Gm=4300\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eVplate=150V\u003c\/p\u003e\n\u003cp\u003eVgrid=-5V\u003c\/p\u003e\n\u003cp\u003eGood Ma per section = 9-11ma\u003c\/p\u003e\n\u003cp\u003eGood Gm per section = 4500-5000\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"6350 RCA","offer_id":697449653,"sku":"6350","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/6350rtriple.jpg?v=1571438816"},{"product_id":"6bq7a-rca-v4","title":"(!!!) (Best Single 1961) 6BQ7A RCA black plates NOS \"D\" getter 1961 (8.2\/8.4ma) 1-3% section balance (Douk Audio, Modwright, Schiit)","description":"\u003cp\u003e1 low noise tube) 6BQ7A RCA black plates NOS \"D\" getter NOS 1961 (MC)\u003c\/p\u003e\n\u003cp\u003e8.2ma Gm=6000\u003c\/p\u003e\n\u003cp\u003e8.4ma Gm=6200\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTested on Amplitrex\u003c\/p\u003e\n\u003cp\u003eGood Ma = 8-9ma\u003c\/p\u003e\n\u003cp\u003eGood Gm = 6000-6400\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e(also see 6BZ7 and 6BK7B)\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e- Douk Audio F5\u003cbr\u003e- Modwright Transporter\u003cbr\u003e- Schiit Lyr amp 2011\u003cbr\u003e- Don Allen\u003cbr\u003e- Donald North Audio (DNA) Stratus\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"Default Title","offer_id":703424373,"sku":"6BQ7A","price":24.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/1_1138eb04-1890-4b8e-904d-5a8d60528910.jpg?v=1746124077"},{"product_id":"u19-gec-nos-1960-s-1-pair","title":"(!) U19 GEC UK NOS 1960's (1 pair)","description":"\u003cp\u003e1 pair) CV187=U19 GEC UK NOS 1960's - reboxed\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe U19 is a half wave high voltage vacuum rectifier. The U19 was designed to have an effective series resistance of 600 Ohms and to feed a reservoir capacitor of not more than 4 µF. \u003cbr\u003e\u003cbr\u003eThis exhibit, made by M-OV, is branded GEC which was the brand for professional sales.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e(Vfil=4.0 @ 3.3A, Vplate max=2500V @ 250ma)\u003c\/p\u003e","brand":"Tube World","offers":[{"title":"U19 GEC pair","offer_id":704573825,"sku":"U19pair","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/products\/U19_large_d8058081-ad63-489b-b509-b4d6eb79bba8.jpg?v=1571438817"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/collections\/other-collection-172.jpg?v=1389480733","url":"https:\/\/tubeworldexpress.com\/collections\/all-other-tubes\/all.oembed?page=50","provider":"Tube World Express","version":"1.0","type":"link"}