NOS Tesla ECC803S. Perfect working order. Minimal use in a Croft preamp to check operation as I have no meter to test.
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FOR SALE TESLA 2 E83CC NEW NOS NICKEL PINS TUBES.
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FOR SALE 2 TESLA ECC803S NEW NOS TUBES.
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The product is a JJ Electronic 12AX7 vacuum tube, also known as ECC83-S, manufactured in the Czech Republic. This tube is commonly used in vintage audio and video equipment to amplify signals and produce clear sound. The JJ Electronic brand is known for producing high-quality vacuum tubes that are sought after by audiophiles and vintage electronics enthusiasts for their reliability and performance. This specific model, the JJ Electronic 12AX7, is designed to deliver a warm and rich tone, making it a popular choice for musicians and audio enthusiasts looking to enhance the sound of their equipment.
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2x TESLA ECC83 / 12AX7. of original 1961-2 TESLA ECC83 tubes. Close date codes: 3/1961 ; 1/1962. One tube has a military 'crossed swords' marking!where a new/unused tube should have around S/gm = 1.60 mA/V, "good" value for transconductance starts at 1.2 mA/V.
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This tube looks identical to the JJ 12ax7 internals. This tube comes from the estate of an audiophile technician who meticulously curated a collection of over 1000 tested and excellent tubes! I will be listing the tubes individually and testing for good or better on a Hickok 799 or Sencore MU140. All writing and measurements on boxes were made by the previous owner and although I believe them to be accurate, some variation may occur. See the last photo for an idea of the span of the collection. This photo is for context only. This listing is only for the tube represented in the title. Feel free to ask questions! I have been a recording engineer for 20+ years and will do my best to answer your inquiries :)
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