The 12AX7 tube is commonly used in vintage guitar amplifiers, as well as in modern tube amps that seek to replicate that classic tone.
Articles Tagged: vacuum tubes
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).