{"product_id":"mullard-ecc33-brown-base-lower-getter","title":"Mullard ECC33 Brown Base Lower [] Getter","description":"\u003cdiv\u003e\u003cb style=\"font-family: Arial; font-size: large;\" data-mce-style=\"color: rgb(42, 99, 58); font-family: Arial; font-size: large;\"\u003eSoundlumia's Opinion\u003c\/b\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003eThis is not a listing about audio tubes but an invitation for you to hear the sweetest voice on Earth. No other tubes can deliver vocals like the Mullard's, whether they're from Mitcham, Blackburn or Heerlen, and that's a fact. These ECC33 tubes are particularly special because they have the very rare yellow print and Cossor label and are being hunted to near extinction by audiophiles and sound professionals. And yes the \"British Made\" lettering is a BIG deal not only because it certifies the tube's true Gt. Britain origin but also because it appeared on select batches of Mullard tubes from select years of manufacturing only. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\"Like a warm British jacket of the finest tweed, these glorious tubes have an attractive sweet warmth in their midrange and lower regions.\"  This is how experts on audiotubes.com describe the sound signature of Mitcham Mullard tubes. The top end is silky and pleasant and doesn't get rolled off. They retain a fine sense of \"air\" at the top, and the upper midrange is smooth and liquid. These tubes reproduce human voice, especially female voices, with haunting realism. Full disclosure from your peer audiophile: Mitcham E88CC's are my go-to tubes for listening to Maria Callas and Frank Sinatra and I refuse to use other tubes. Mitcham Mullard's are also known to have an attractive sparkle at the top with rich bass...now we know where that \"warm British jacket\" comes from!\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4 class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\" data-mce-style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: rgb(219, 118, 17); text-decoration: underline;\" data-mce-style=\"color: rgb(219, 118, 17); text-decoration: underline;\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 18.0pt; font-family: 'Arial',sans-serif;\" data-mce-style=\"font-size: 18.0pt; font-family: 'Arial',sans-serif;\"\u003eStrong\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cspan style=\"color: rgb(217, 119, 21);\" data-mce-style=\"color: rgb(217, 119, 21);\"\u003e\u003cb\u003e1x Mullard ECC33 High Gain 6SN7 Brown Base - BVA - Blackburn 1957 - NOS\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cspan style=\"color: rgb(217, 119, 21);\" data-mce-style=\"color: rgb(217, 119, 21);\"\u003e\u003cb\u003e$438.00\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(0, 0, 0); font-family: Arial; font-size: large;\" data-mce-style=\"color: #2a633a; font-family: Arial; font-size: large;\"\u003e\u003cb\u003eProfessional Tube Testing\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(0, 0, 0); font-family: Arial; font-size: large;\" data-mce-style=\"color: #2a633a; font-family: Arial; font-size: large;\"\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003eThis set was tested and certified by RoeTest V11 tester with the following result: \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003eMeasured transconductance (GM): 2.91\/3.1 mA\/V  - 81%\/86%  (100% = 3.6 mA\/V)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003eMeasured plate current (IA): 9.092\/9.032 mA  - 101%\/100%  (100% = 9.0 mA)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003eNO shorts, leakage or gas. NO noise or microphonics.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003eCurve trace is also included in the original RoeTest report.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(0, 0, 0); font-family: Arial; font-size: large;\" data-mce-style=\"color: #2a633a; font-family: Arial; font-size: large;\"\u003e\u003cb\u003eAppearance \u0026amp; cosmetic condition\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003eWe treasure this pair also because of the pristine condition of both tubes - over 90% of the paint and lettering are well retained. The Mitcham date codes painted glass are also visible on both tubes:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-family: Arial; font-size: large; color: rgb(0, 0, 0);\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cb\u003e5K3 B7E \u003c\/b\u003e(5K = ECC33 production, B = Blackburn, \u003cb\u003e7 = 1957,\u003c\/b\u003e E = May)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cb style=\"font-family: Arial; font-size: large; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255);\" data-mce-style=\"color: rgb(42, 99, 58); font-family: Arial; font-size: large; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003ePackaging\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cb style=\"font-family: Arial; font-size: large; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255);\" data-mce-style=\"color: rgb(42, 99, 58); font-family: Arial; font-size: large; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" data-mce-style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\"\u003eNEW \u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" data-mce-style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\"\u003ereproduction\u003cb\u003e \u003c\/b\u003eSiemens tube boxes.\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" data-mce-style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4 class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\" data-mce-style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: rgb(219, 118, 17); text-decoration: underline;\" data-mce-style=\"color: rgb(219, 118, 17); text-decoration: underline;\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 18.0pt; font-family: 'Arial',sans-serif;\" data-mce-style=\"font-size: 18.0pt; font-family: 'Arial',sans-serif;\"\u003eOriginal Box NIB\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" data-mce-style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\"\u003e\u003cspan style=\"color: rgb(217, 119, 21);\" data-mce-style=\"color: rgb(217, 119, 21);\"\u003e\u003cb\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e1x Mullard ECC33 6SN7 Brown Base Lower [] Getter Orig. Box - Blackburn '57 - NIB\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" data-mce-style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\"\u003e\u003cspan style=\"color: rgb(217, 119, 21);\" data-mce-style=\"color: rgb(217, 119, 21);\"\u003e\u003cb\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e$\u003cspan\u003e488.50\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" data-mce-style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: Aptos; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\"\u003e\u003cspan style=\"color: rgb(217, 119, 21);\" data-mce-style=\"color: rgb(217, 119, 21);\"\u003e\u003cb\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" data-mce-style=\"font-family: Arial; font-size: large;\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003eProfessional Tube Testing\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003ca name=\"_Hlk169732138\"\u003e\u003c\/a\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003eThis set was tested and certified by \u003cb\u003eRoeTest V11 Professional Tube Testing System\u003c\/b\u003e with the following result: \u003c\/span\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13pt; font-family: Arial, sans-serif;\"\u003eMeasured transconductance(GM): 3.57\/3.24 mA\/V - 99%\/90% (100% = 3.6 mA\/V)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13pt; font-family: Arial, sans-serif;\"\u003eMeasured plate current(IA): 9.977\/8.695 mA - 111%\/97% (100% = 9 mA)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13pt; font-family: Arial, sans-serif;\"\u003eNO shorts, leakage or gas. NO noise or microphonics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13pt; font-family: Arial, sans-serif;\"\u003eCurve trace is also included in the original RoeTest report.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003eAppearance \u0026amp; cosmetic condition\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13pt; font-family: Arial, sans-serif;\"\u003eWe treasure this pair also because of the pristine condition of both tubes - over 90% of the paint and lettering are well retained. The Mitcham date codes painted glass are also visible on both tubes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003e5K3 B7C \u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003e(5K = ECC33 production, B = Blackburn, \u003cb\u003e7 = 1957,\u003c\/b\u003e C = March)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003ePackaging\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003eOriginal \u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif;\"\u003eMullard tube box.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mullard","offers":[{"title":"Strong","offer_id":49669241438528,"sku":"266822038112","price":438.0,"currency_code":"USD","in_stock":true},{"title":"Original Box NIB","offer_id":49669241471296,"sku":"266822038113","price":488.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/2388\/5888\/files\/57_506bce94-57d4-4ee3-9c62-9a85114186b6.jpg?v=1716274243","url":"https:\/\/www.soundlumia.com\/ja\/products\/mullard-ecc33-brown-base-lower-getter","provider":"Soundlumia","version":"1.0","type":"link"}