The EF86 [1] is a high transconductance sharp cutoff pentode vacuum tube with Noval (B9A) base for audio-frequency applications. It was introduced by the Mullard company in 1953 [ 2 ] …

Tube EF 86 or Röhre EF86 ID2011, Vacuum Pentode, Noval, 9 pin miniature (USA pico-9) B9A and Audio Frequency shown. Radio tubes are valves.

The EF86 is the standard early stage audio pre-amplifier valve. This exhibit was made by Mullard in Great Britain. Mullard designed the EF86 and it took over the frond end stage of audio …

Low noise pentode intended for use as R.C. coupled A.F. EF86 voltage amplifier, particularly in the early stages of high-gain audio amplifiers, microphone pre-amplifiers and magnetic tape …

EF86 page sheet date 1 1 1970.01 2 2 1970.01 3 3 1970.01 4 4 1970.01 5 FP 1999.08.16. Title: EF86 Author: Philips (scanned by Frank Philipse) Created Date:

Jul 19, 2018 · Are you currently experiencing bad sound from the EF86 you are using in your amp? Describe the symptom . . . hum, distortion, apparent frequency response problem, …

The Svetlana EF86 features: • Low microphonics and low heater hum induction - suitable for input stages in high-gain microphone preamps, phono preamps or as a gain stage in condenser …

The EF86 exhibits excellent frequency response characteristics, enabling accurate reproduction of audio signals across a wide range of frequencies. Its ability to faithfully transmit both low and …

The EF86 is similar to its precursor, the EF40, but has a noval socket (instead of the rimlock socket). The EF86 type was introduced in 1955 as low hum and low noise type. Hamburg

The EF86 is the standard early stage audio pre-amplifier valve. This exhibit is of unknown make but is unusual in that the outer screen is a cylindrical metal tube and not made of mesh. The …