The EF86 is a high gain pentode designed to amplify low-level audio
signals. Introduced in the late 1950's, it is used as a preamp in audio equipment and
instrument amplifiers. Beginning in the 1950's Mullard was producing hifi amplifiers that used the EF86 as a high-gain input tube and Vox was doing the same in their guitar amplifiers.
Below is our current selection of EF86 audio tubes. For more information on EF86 vacuum tubes including pinouts, ratings, application and possible substitutions visit EF86 in Wikipedia and EF86 in Duncan Amps.