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Svetlana EF86 High-Performance Audio Small-Signal Pentode T
https://frank.pocnet.net/sheets/164/e/EF86.pdf
he Svetlana EF86 is a glass envelope miniature pentode intended for high-quality audio preamplifier service. Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance. The Svetlana EF86 is manufactured in the Svetlana factory in Russia, and is designed to be a direct ...
EF86 / 6267 Tube Reviews - www.thetubestore.com
https://www.thetubestore.com/ef86-tube-review
The EF86 is a high gain pentode designed to amplify low-level audio signals. It is typically used as a preamp in audio equipment and instrument amplifiers. Because of its design, the EF86 is much more sensitive than other common preamp tubes like the 12AX7, and achieves more gain.
VOL TAG E AMPLIFYING PENTODE EF86
http://www.r-type.org/pdfs/ef86.pdf
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 recorders. PERFORMANCE OF EF86 AS PENTODE CONNECTED R.C. COUPLED AMPLIFIER PLOTTED AGAINST LINE VOLTAGE. FOR R,,=220 k.Q.
AUDIO VALVES: EF86, Z729, CV2901, CV4085, PENTODE ...
https://mullard.org/collections/audio-valves-ef86-z729-cv2901-cv4085-pentode
The EF86 B9A based audio pentode used in many classic valve and guitar amplifiers. On offer we have EF86 from a range of manufacturers and in configurations of single, twins (x2) and quads (x4) - remember, for those of you with amplifiers utilising paraphrase phase splitters ala Hafler & Keros and Quad II it is ESSENTIAL to equip these with closely matched valves.
CV4085 (Special EF86) LOW-NOISE AUDIO PENTODE
http://www.phaedrus-audio.com/CV4085.htm
Three typical CV4085 (EF86) applications - circuits A, B & C. Three example CV4085 (EF86) pentode circuit schematics are given above. The Phædrus Audio CV4085 (Special EF86) device is a suitable substitute in all these circuit arrangements. Contact [email protected] for more information and advice.
EF 86, Tube EF86; Röhre EF 86 ID2011, Vacuum Pentode
https://www.radiomuseum.org/tubes/tube_ef86.html
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.
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