Now in short supply, the EF86 Pentode tube is at the heart of this elusive tone. It's a fitting tribute to Vox's 50th anniversary. Two great preamp channels in one package Channel 1 of the Vox AC15 Heritage Head is the EF86 Preamp channel, and features two inputs wired for 6dB gain difference between them.
18.95 USD. Electro-Harmonix EF86 pentode preamp tube. Made in Russia.
The EF86 channel is known for it's incredible clarity and balance across the fingerboard. Because of the high headroom of the EF86 preamp tube, this channel responds particularly well to pedals.
6GM8, ECC86.
cdyas10-24-2007, 03:06 PM My vox heritage AC15 has a pentode/triode switch for the EF86. there is a tremendous clean you can get out of the EF86 channel in EF86 triode mode. I cannot get the same clean out of that channel in pentode mode with the volume just turned down.
6GM8, ECC86.
The EF86[1] is a high transconductance sharp cutoff pentode vacuum tube with Noval (B9A) base for audio-frequency applications. It was introduced in the late 1950s and was produced by Philips...
Preamp tubes. EF86 RFT Germany NOS. NOS, can also be labled TESLA. Tube Type: EF86/6267/EF806. Socket
EF86 : PreAmp, paßt zu den Endstufen Stereo 20 und Stereo 50. GB : 56 : Varislope III (3) EF86 : Mono PreAmp, to use with PA TL/12+, TL/25+ und TL/50+. GB : 64 ...
Check out the Morgan AC20 Deluxe C 20 watt EF86 1x12 combo with Celestion G12H-75 Creamback speaker. Morgan are an American firm based in California that make high end amps and cabs. Dial in the gain The Master volume on this amp is similar to the ones used in The SW series of Morgan Amps.
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  • The first stage for Channel 2 of the Matchless DC-30 guitar amplifier contains an EF86 pentode that drives the effects send or the phase inverter via a switchable coupling capacitor CG and a 1MΩ volume control. CG is switched in 6 steps between 330pF (maximum bass cut) and 0.01μF (minimum bass cut).
  • Built to audiophile-quality standards with a price tag well below other boutique preamps in or near its class, the MP-2A has no integrated circuits in the signal path - it relies solely on discrete components: the perfect combination of tubes (EF86 for the inputs, 6N1-P on the outputs), Audience capacitors, and custom Cinemag Output transformers, and is meticulously hand crafted with point to point wiring.
  • This amp is named in its honor, although it is more British in design than American, and is similar to the normal channel of the 15-Watt amp once used by the Beatles. It features controls for Volume, tone, master and cut. It has an EF86 preamp, 12AX7 Phase inverter, two EL84s in Push=Pull configuration and a 5AR4 Rectifier.

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This amp is named in its honor, although it is more British in design than American, and is similar to the normal channel of the 15-Watt amp once used by the Beatles. It features controls for Volume, tone, master and cut. It has an EF86 preamp, 12AX7 Phase inverter, two EL84s in Push=Pull configuration and a 5AR4 Rectifier.

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

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This is equally true for the output coupling capacitors of the preamp. This is a suitable value for the screen grid potential of EF86 via R9, but the most important feature of this strange and clever DC-coupling is a DC negative feedback (NFB) system from cathode of EL84 to screen grid of EF86.

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EF806S(EF86)+6Н23П-EВ(6Н6П).


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Jul 21, 2009 · restore them. A plastic pushbutton is missing from the preamp and the aluminium control knobs have a light corrosion on them. Should I attempt to clean these off? Also the amplifier has a valve missing. The one in the other channel in the equivalent position is an EF86, is it safe to assume that this is the same type?

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

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Feb 03, 2014 · Even with the internal preamp bypassed switch set to External the signal still went through a circuit board. I wanted a clean sound. Jumping it did help. I use a spare blue ray DVD to play CDs and i think it sounds just fine, less harsh. My Preamp is a Little Bear Toroidal Transformer Little bear T10 Pro with Russian 6N2 tubes.

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EF86 Haltron nos nib : ราคาต่อคู่ 750 บาท. This entry was posted in Preamp, Vaccuum Tubes by createhouse.Bookmark the permalink.

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A high gain pentode of special design, the EF86 is particularly suitable for preamplifier and input stages, in which hum, noise and microphony must be kept to a minimum. The low frequency noise generated by the valve is equivalent to a voltage of 2 μV on the control grid for a bandwidth from 25 to 10,000 Hz.

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6267/EF86 Mullard aftermarket screened for Hammond Organ, 1960s vintage Great Britain Mullard made. New Old Stock white Box. A superb EF86 that is even better since they were aftermarket screened for use in Hammond Organs where low noise was critical. These are amazing in microphones, guitar amps, and hi-fi equipment.

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Preamp tubes fill many roles in various equipments. Preamp tubes take small signal from sources such as guitar pickup, phono cartridge, and even DAC output, and amplify the signal to feed into power amp stage. Preamp tubes are also used to create push-pull signal to drive the output power tubes.

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The widest range of unstuck preamp tubes available in Australia are here at Evatco over 57 varieties including 12ax7, ecc83, 12au7, 12at7, ecc82, ecc81, ecc823, ecc832, 12dw7...

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Jan 17, 2018 · EF86 Preamp Tube Questions and Recommendations. Discussion in 'Tube Audio' started by Mellotronix, Jan 10, 2018. Page 2 of 2 < Prev 1 2. UncleBingo Super Member ...

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One 12AX7A RCA U.S.A. preamp vacuum tube. This tube is exceeding industry standards for a new 12AX7A tube. Triode 100 -1 0.5 80,000 1.25. Triode 250 -2 1.2 62,500 1.6. D Halo getter (rare version). CAT SL-1 Signature Mark III preamp.

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The EF86 is of course the tube used in the u67. But there was some complicated design elements in The EF86 is designed as a low noise preamp and so is the 6072 so we are pretty much even there.

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An EF86 was famously used as the input stage for the early Vox AC30s, but it Unfortunately, for some reason preamp pentode data sheets always seem to give example voltages that are...

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Preamp Tubes. Preamp Tubes; ECC81 / 12AT7 Dual Triode; ... EF86 / 6267 Single Pentode; Power Tubes. Power Tubes; EL84 / 6BQ5 / 6N14N Pwr Pentode; EL34 / KT77 / 6CA7 ...

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EF86 Anode Characteristics. Universal PCBs. YOU'VE SEEN THE WEBSITE, NOW READ THE BOOKS! Visit my boookshop at . Get money off my book at Lulu.com, find today's voucher code on the Lulu home page! Click the images to find out about the books. Visit my webshop for PCBs News: 10 December 2019: Engineer's Thumb updated. 17 September 2017:

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Preamp tubes NOS and like new - the best of the best!

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May 12, 2005 · in preamp therere 3x ECC808, 2x EF86, 1x ECH81 ... "6DJ8--small preamp tube, widely used in modern hi-fi amps and preamps. Also known as premium types 6922, 7308."

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This is equally true for the output coupling capacitors of the preamp. This is a suitable value for the screen grid potential of EF86 via R9, but the most important feature of this strange and clever DC-coupling is a DC negative feedback (NFB) system from cathode of EL84 to screen grid of EF86.

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Aug 25, 2015 · 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.

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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.

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Trova una vasta selezione di Ef86 a prezzi vantaggiosi su eBay. Scegli la consegna gratis per riparmiare di più. Subito a casa e in tutta sicurezza con eBay!

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Find many great new & used options and get the best deals for 6267 / Ef86 Preamp Vacuum Tube Amperex Tests Strong at the best online prices at eBay! Free shipping for many products!

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The EF86 has about 5 picofarads of capacitance between the grid and cathode and only 0.05pF To ensure that radio-frequency suppression in our EF86 preamp begins at a cutoff frequency of 100kHz...

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May 12, 2005 · in preamp therere 3x ECC808, 2x EF86, 1x ECH81 ... "6DJ8--small preamp tube, widely used in modern hi-fi amps and preamps. Also known as premium types 6922, 7308."

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7199, 845, 211, VT-4, 801, 810, 5AR4, GZ34, 5V4, 5Y4, 280, 83, 83V Misc. Eye Tubes-any MICROPHONES Misc. vintage high end Ribbon Mics Double Button (spring type)

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The CA-286 preamp module is a tribute to the classic 1950's and 60's European two-stage amplifier The (Output) control knob is placed between the 1st and 2nd stage EF86 tubes and sets the final...

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May 14, 2020 · Based around an early 50's EF86 a tube designed for high end audio it's main feature is a really low noise floor. So it was a great idea to use for a boost as it is very quiet and transparent. so it can act as a second channel pushing a tube amp into crunch or more.

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EF86 Preamp Tube Comparison: JJ vs RFT Post by JMPGuitars » Mon Sep 30, 2013 3:15 am Out of sheer curiosity, and love for the EF86 as a preamp tube, I recorded a comparison between the JJ EF806S (modern EF86 from JJ) and an RFT EF86 (NOS).

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If more gain is required, a 12AX7A can be substituted for the 6072A, but the soft characteristics of the 6072A will be lost, and the preamp will sonically be far less forgiving. The 6072A/12AY7A has a very soft roll-over, and generates almost no odd harmonics when biased properly — making it, in my opinion, the choice for the gain stages.
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The EF86 was used in many preamplifier designs during the last decades of vacuum tube hi-fi development. An industrial variant of the tube is known as 6267. In the former Soviet Union a variant was also produced as type 6Zh32P (Russian: 6Ж32П.) As of 2012 Kingsley Squire EF86 | Tube Preamp Overdriven Tones (Playthrough - No Talking). My own circuit design from scratch. Preamp is 12ax7 to ef86 to 12ax7(cathode follower) to 12ay7 LTP phase...


Channel 1 is the EF86 Preamp channel - It features two inputs wired in the traditional way that gives them a 6dB gain difference between them. A two-position BASS SHIFT switch is included, with position 1 voiced to the original vintage-correct bass response and position 2 voiced to tighten the bass response and reduce any muddiness during high ...