12AX7

12AX7 also known as ECC83 , is a family of vacuum tubes. There are miniature low-frequency double triodes with a high voltage gain and low slope of the transfer characteristic. In addition to the original 12AX7 and its improved European version ECC83, the family includes more than 200 options. The electrical characteristics of most of […]

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Ei Tube

Ei tube refers to those valve (plate) tubes, most known being Ei Ecc83 / 12AX7 tubes produced in the former Yugoslavia by Electronic Industry Nis (El Nis / Holding Korporacija Elektronska Industrija a.d. Nis). Just a little history on Ei tube Ei tube factory was founded in 1948 in Nis, Serbia (former Yugoslavia) as a […]

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