*  EL84 Single Ended Amplifier


very beautiful tubes

Toshiba 6BQ5


baronly weekend log file show on my site data if would like to see
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Let's me show you EL 84 Single Ended Amplifier D.I.Y

EL Single Ended Amplifier

EL84 Single Ended Single Ended Amplifier

EL84 single ended amplfieir

EL84/6BQ5 Single Ended Amplifier with Daniel Speaker 2006 Chile


almost 10 years using ,nothing problem EH EL84


6P15 (6П15) is substitutes valve

7189 will be get 6 W rms Plate dissipation is 13.5W /6.3V 0.76 A heater and 6BQ5 as 5.7W and Plate dissipation is 12W

Duncan amp

If you need information of any valves,please check up by Duncan Amp Site.

And if would you like to study How to learn amplifier
How to lean build up valve amplifier but this version is only spanish.

Start 5th Mar 2017

Very easy to build up one of EL84 Single Ended Amplfier then I tested at all ,getting Df 2.2 at 1 Khz and rms power is 4.5 W max.
very good,DF 2.2 is not so bad value ,,
sound just like a EL34 family sound .EL84 family does not good power if using triode connection so this time using as penthod modo.
long time I am using small vertical twin Yamaha NS 300 91db/m speakers until now and getting sound great.It's enough to use at home.
I like to listen modern classic music like a Vent Vent ,,,by  James Macmillan and mostly using modern Jazz ,piano by Kieth Jarrett and Fusion.
this amplifier getting peak power are almost 4.5W and at 5% distortion is 3.8 W.Freq response are 20Hz to 50Khz -3dB at 1W rms. very natural if using good core of transformer.
how about try to build up these kind of small amplifier ? looks like toy but sound is good enough for your first audio room for 1st time.
but these kind of small power amplifier sound depend on good efficiency speaker.at least need 91dB/m/w or more.
I think easily to make one of amplifier by your pocket money.???from US $100 ~ $ 250 ..will be fine..But you have to seach where to get component in your country and electronics shop and some time good get from digikey and rs component in your country.

Mr Yoshio Nasu writer and builder of valves Amplifier in Japan .Mr Nasu is writer name. real name is Mr Suzuki ex owner of ISO Tango.this small amplifier designed by
Mr Nasu( Mr Suzuki )he made many of amplifier from a to z. even 300B and RCA 50 Single Ended Amplifier and many push pull amplifier too.
let's me show you one of old book of Mr Nasu. call it's 「Produced a collection of 24 different tube amp to be able to make sure」
this old book is still Has been published under IAR Japan.but only Japanese version can to get. book
please ask to them if would like to get good book but only Japanese version.inside show 6V6,VT62,45,50,6BX7,2A3,6BQ5,DA60,6BM8,843,6CA7,50 as single ended amplifier.
and VT52,6F6,KT66,2A3,6V6G,6BQ5,6L6 as Push Pull Amplifier.and few pre amplifiers.all of Amplifier using off course Tango Transformer.

How to fixed position of Power Transformer and Audio Transformer

As you know ,,Power Transformer made some noise( Ham noise)from AC line through to Audio Transformer .always each power transformer core and Audio Transformer line are
90 degree vertical. exactly how to make position of each transformer are,,,please see how to make fixed position of Audio Transformer
ans Power transformer on chassis. and made ground line in chassis.
and see Ground line how to makevery important.when make plan to build up one of valve amplifier.

ground line

ground line(we call it's mother line in Japan)kind of Cupper wire 2 m/m just like photo.some time use nickel wire or gold wire too)

AnySingle Ended Amplifier getting one of problem with Hum noise from Power Transformer.
so one's have to test for postion of transformer position before fixed up position of transformer.
relationship of positon of audio transformer and power transformer are always 90 degree core of each other.
many expensive Japanese Transformer are "does not care position of transformer".because
they are already has shield.both way of electric shield and magnetic shield.but make sure must test position each other.
like next


Power transformer for audio

Testing position of Transformer

like this.fixed position of transformer

1st EL84 Single Ended Amplifier

How about Raspberry Pi B+ or Pi2 for Your Music Server with small IS2 DAC Raspberry Pi Music Server 2015

Raspbrry Pi B+ and Pi2 ,Most small PC using as Music Server with I2S DAC DIY on Mar 2015

Raspbbery Pi B+ on 2015 Enero

Raspberry Pi B+ ,Volumio 1 Tera USB HDD(SATA))y USB DAC es FN1242A Single DAC on 2015 Enero

Raspberry Pi 2 Cantata

Work Station Raspberry Pi2 and Music Server Volumio and Cantata MPD show alubum

6BQ5 Single Ended Amplifier

Mr Vidal his small audio line in concepcion chile

Still he is using TA2020 digital amplifier and EL84 Single ended amplifier in Chile

Circuit diagram show

above png file.I got 2 of different EL84 one of JJ and
EH . both are good but JJ is a little bit narrow sound to get other wise EH is
very wide range. power transformer is 250V 100mA small one.out put transformer are
Toei trans Co Japan OPT-5S ( 5W 40Hz  small transformer  US$ 19 each ) 1/3 size of
Tango U-808.valve are 1 of 6AQ8(ECC85) and EH EL84 .they are better than any other
combinations.EH EL84 is very good tone has.even Mullard EL84 old tube if you can
get too.with 6AQ8 and Mullard EL 84 using very beautiful sound you can get and instead of ECC85(6AQ8) can be use 6DT8 .just like same sound of 6AQ8(ECC85).same circuit can be use for EL34 single ended amplifier only 2 parts need replace ,Power Trans and Out put transfomer for mejor type.

I am using small one

and I think many person heard 1st time this
Toei transfomer Co Japan.they are  making  many  small  transfomer  for
maching  transfomer as a PA system.and making some of clone of Tango trans recently. OPT-5S is clone of Tango U-608 .same you can use
Hammond mini transfomer 125CSE instead of Toei Transformer.
next one is same circuit as above but added 2 volume control and 2 Input line.
valuve are same family can be use .like a 6BQ5 and 7189 audio tubes.

dimension : 230mm X 160mm X 120mm(high) very cute amplifier but sound like
EL 34 Single Ended Amplifier .just enough to use your living room.

     Testing proto type Back View

123movie free movie

Free Movie and TV from USA 、very nice site if do you understand english

Same circuit diagram as above but Power Transformer is Noguchi Trans CO Japan

PMC 100 same capacity of 1st one .Noguchi's Trans has Magnetic Shield.

(if you 'd like to see Japanese version  click here)

Audio Transformer informations

show you 2 type of Transformer one is Touei Transformer and other one is Kasuga Transformer.both are for 5 W Single Ended Amplifier.
Touei is OPT-5 (OPT-5SR) for Lower frequency amplifier suppose be for Jazz, Violin Classic, Rocks
Kasuga is KA-54B57 (KA-54B57T)for plan . reach to high frequency response for Fusion and Classic.
almost each other diffrent maker but almost same price.


Case Type OPT-5SRTOUEI TRANSFORMER OPT-5SR (Shield Type)77mm x 56mm x 64mm
2.5K - 3.5 K
4 ohm -8 ohm
5  K - 7   K
8 ohm -16 ohm

Audio Transformer's、impedance and output impedance、relation show next 5k ohm can be use as 10K ohm impedance input impedance.


What kind of valves can be use:71A,45,2A3,VT-25,6AC5,6F6,6V6,6BM8,6BQ5(EL84),7189

Max Power is 5W/100Hz primary DC current s 80mA 347±5% ohms(20C 3.5K ) weight is 640g each one.
And Kasuga Transformaer is Next

OUT-54B57 KasugaKASUGA TRANSFORMER OUT-54B57    77mm x 44mm x 49mm 60mA Max

KA-54B57T KASUGAKASUGA TRANSFORMER KA-54B57T (Shield Type )   72mm x 51mm x 57mm 60 mA MAX

impedance are 5K and 7 K ohm primary and 2ndary are 4,8,16 ohms.and DC resistance are 7K = 285 ohms and 5K = 233 ohms 488g each one.

if would like to get one pair ,ask for Mail.in general original cost x 20 % for Labor and add shipping charges by EMS. if would like to get.

If do you have a interesting on BSch ,QT BSch ,LCOCircuit Editer .get from

they have free soft ware of circuit design program for Windows Mac and Linux.
and some library are here(tubes.LB3)for Linux under tall ball .

and Zip is Zip for any OS you can use.
Data up date on 1st May 2014 this is new archive

Additional Files :
Lib-V2(Zip)File for Zip for Linux and Windows
Lib-V2(tar.gz)Filetar.gz(tar ball zip)for Linux

For Fedora Core 17,18,19 ftp://ftp.nara.wide.ad.jp/pub/Linux/momonga/6.0/Everything/x86_64/os/Packages/qtbsch3v-0.47-3m.mo6.x86_64.rpm
I am using FC18 Linux good work.

and you can made it's around USD 350 dollars .what do you think still expensive for you ?this is not chinese amplifier this is your amplifier for you.
Suigyodo CAD how toto use,please see it.
easy to drow schematic diagram and you may add new library as lb3. schematic diagram save as .ce3 then covert png file.
and this is my site for how to make symbol of each components.How to make symbolbut only in Japanese.

  Audio Spectrum  Analyzer for PC(free ware)
About EL 84 Single Ended Amplifier comments in Spanish ,santiago chile 12nd Aug 2004
Un gran mini amplificador

Si hay alguna palabra que puede resumir el caracter del sonido del mini
amplificador EL84 es suavidad. El sonido en todo el espectro sonoro es de
una suavidad que nunca llega a la exageracion de distorsionar gravemente
los sonidos. Y la nitidez que subyace a esta extraordinaria suavidad
musical es fuera de lo comun, y ciertamente nunca escuchada en equipos de
precio tan economico como este mini amplificador EL84. Escuche varios CDs
que conozco bien a trav� de un lector de DVD Toshiba, modelo SD3109, y
con mis parlantes preferidos, los Altec Modelo A7.

El magnifico CD de Diana Krall, The Girl in the Other Room (Universal), a
traves del EL84 adquiere una presencia escenica abrumadora, con la
magnifica confluencia del piano y la voz de la extraordinaria interprete,
amalgamada a la perfeccion con el contrabajo, el piano y una bateria que
es sensualmente suave y nunca estridente. El impresionante comienzo de
Stop this World, con un piano tan dulce que no deja ver su cualidad de
cuerdas percutadas, anuncia ya una grabacion de calidad sobresaliente. En
The Girl in the Other Room la presencia de Diana Krall al frente de los
parlantes, con su exquisita modulacion y tecnica perfecta, hacen que su
respiracion nos transporte al ambiente intimo de una sala de jazz, con su
voz envuelta en el acompanamiento de musicalidad extrema de sus
acompanantes. En Narrow Daylight la guitarra hace un delicioso dialogo con
la cantante, con cada una de sus cuerdas llegando nitidamente a uno con el
equilibrio perfecto entre fidelidad y suavidad del sonido del mini
amplificador EL84.

Pero un amplificador puede ser sobresaliente en musica intima y al mismo
tiempo carecer de la capacidad de resolucion sonora ante musica orquestal
compleja. Musica intima en este contexto significa de rango dinamico
reducido y cuya relativa pobreza en instrumentos implica una variedad
reducida de timbres sonoros. Esto se observa frecuentemente en equipos
musicales transistorizados o a tubos de bajo costo. Bueno, ciertamente no
este el caso del mini amplificador EL84, el cual tambien es de una
perfeccion sonora extrema ante musica orquestal compleja.

La Sinfonia N� 40 de WA Mozart interpretada por Nikolaus Harnoncourt
(Teldec) revivio con una delicadeza a la altura de este gran director. El
casi exagerado fraseo y modulacion del tiempo que hace esta orquesta bajo
la direccion de Harnoncourt, entregan una notable interpretacion de
camara, que sin embargo mantiene el caracter sinfonico de una obra muchas
veces interpretadas por orquestas mucho mas numerosas. La intensidad
controlada que impregna a esta sinfonia alcanza probablemente su climax en
el tercer movimiento, donde el juego de contrapunto lleva la memoria
irremediablemente a JS Bach, sin que nunca le falte aire al amplificador
para reproducir todo el rango dinamico de la orquesta. El ultimo
movimiento libera la energia contenida del tercero, finalizando en un
juego de melodias sublimes que despliega toda la maestria superior de la
forma, la orquestacion, la armonia y el contrapunto que en WA Mozart son
la culminacion de un estilo y el augurio de la musica venidera. El noble
mini EL84 revivio en forma perfecta la interpretacion grabada en vivo, con
instrumentos de epoca y la orquestacion original de WA Mozart, entregando
con definicion y nitidez a cada uno de los instrumentos, pero sin
destacarlos exageradamente sobre el todo de la orquesta. Uno no puede
dejar de pensar que esta magica experiencia entregada por el
extraordinario mini EL84, solo puede ser superada por una audicion en
vivo, al frente de la orquesta.

Y si se quiere poner a prueba la suavidad y musicalidad del mini amp
EL84, una prueba de fuego es el Concierto para Orquesta de Bartok. La
interpretacion de Bernard Haitink al frente de la Royal Concertgebouw
Orchestra (CD de Philips) es bellisima, y los bronces y los violines, y
aun las inevitablemente estridentes trompetas, reviven a traves del mini
EL84 con una dulzura sobrenatural, sin que se pierda ni un apice de la
fuerza de la orquesta en la sucesion de fortes impregnados de bronces que
salpican la orquestacion de Bartok hasta el final de la obra.

Conseguir esta altisima alta fidelidad, manteniendo el precio en un rango
muy bajo, es otro de los logros del circuito y manufactura del mini
amplificador EL84, disenado y fabricado con una simpleza clasica, siempre
poniendo la electronica al servicio de la musica.

Dr Hugo Cardenas

Great mini amplifier
If there is any word that can sum up the character of the sound of the mini
EL84 amp is striking . The sound throughout the sound spectrum is
a smoothness that never reaches the exaggeration of seriously distorting
sounds . And sharpness behind this extraordinary softness
music is out of the ordinary , and certainly never heard in teams
as affordable price as this mini amplifier EL84 . Hear various CDs
I know well trav a Toshiba DVD player model SD3109 , and
my favorite speakers, the Altec Model A7 .

The magnificent CD Diana Krall , The Girl in the Other Room (Universal ) , a
through the EL84 acquires an overwhelming stage presence , with magnificent confluence of the piano and the voice of the extraordinary interpreter, amalgamated to perfection with bass, piano and drums that is sensually smooth and never harsh . The impressive start Stop this World , with a sweet piano that belies its quality of percutadas strings , and announces a recording of outstanding quality. in The Girl in the Other Room Diana Krall 's presence in front of the speakers, with its exquisite and perfect modulation technique, make your breathing shuttle us intimate atmosphere of a jazz club , with its voice shrouded in extreme musical accompaniment of his companions . In Narrow Daylight guitar makes a delightful dialogue with singer , with each of its strings coming neatly with one perfect balance between smoothness and fidelity Mini sound EL84 amplifier .
But an amp can be outstanding in intimate music and at the same time lack the capacity to orchestral music sound resolution complex . Musica intima in this context means the dynamic range reduced relative poverty and whose instruments involves a variety reduced sound timbres. This equipment is often observed in musical transistor tubes or low cost. Well, certainly not the case of the mini amplifier EL84 , which is also a extreme sound to perfection complex orchestral music .
The Symphony No. 40 by Mozart performed by Nikolaus Harnoncourt ( Teldec ) revived with a delicacy at the height of this great director . the almost exaggerated phrasing and modulation of time makes this orchestra under Harnoncourt 's address , delivered a remarkable interpretation of camera, yet maintains the symphonic character of a work many sometimes interpreted by much more numerous orchestras . intensity controlled that permeates this sinfonia probably reaches its climax in the third movement , where the game takes counterpoint memory JS Bach hopelessly without ever lacks air to the amplifier to reproduce the entire dynamic range of the orchestra. the last movement releases the energy contained in the third , ending a sublime melodies game that displays all of the top Masters form, orchestration , harmony and counterpoint in WA Mozart are the culmination of a style and omen of the coming music . the noble EL84 mini revived in perfect shape the interpretation recorded live with era instruments and the original orchestration of WA Mozart , delivering with definition and clarity to each of the instruments, but outrageously highlight them on all of the orchestra. One can not help thinking that this magical experience delivered by the special mini EL84 , can only be overcome by a hearing in Live , in front of the orchestra.
And if you want to test the smoothness and musicality of the mini amp EL84 , a test is the Bartok Concerto for Orchestra . the interpretation of Bernard Haitink leading the Royal Concertgebouw Orchestra ( Philips CD ) is bellisima , and bronzes and violins , and even the shrill trumpets inevitably , revived through the mini EL84 with preternatural sweetness , without losing one iota of strength of the orchestra in the succession of fortes impregnated bronzes Bartok 's orchestration dot to the end of the work. Get this ultra high HiFi, keeping the price in a range very low , is another achievement of the circuit and manufacturing of mini EL84 amp , designed and manufactured with a classic simplicity , always putting the electronics in the service of music .
Dr Hugo Cardenas , Santiago,Chile
Tranlate google

300B and KT88

EL86 single ended amplifier

EL86 Single Ended Amplifier with Active UL

EL86 Single EndedAmplifier D.I.Y on 2012

This Amplifier using 6CW5(USA) and EL86(Europa) ,TV vertical valve using for Power.
one thing very similar valve with EL84 but charactor is very different.low plate voltages and
high plate current.physically very similar each other valves.but just different sound.

Appendix 1

frequency response are 10Hz to almost 50KHz at -1dB 1W rms

Power is max 4.5 W rms at 0.35V rms input level.not reach to 5W cause
by small transformer use.but sensitivity is very nice.

el86 PP mini

please click for see to Mini EL 86 PP

My D.I.Y Site My D.I.Y

The World of Cardamom's

Strange but not Stranges Amplifier from Mr Cardamom's


Appendix 2

Speaker system Made in Chile .Cajas Acusticas Chile with 45 Single Ended Amplifier hereto click.

My audio system 2005
46+ 45

Left Channel is 46 sylvania and Right channel is 45 tung-sol
Just say 2type of triode diffarent combination.
46 is slightly narrow so make a NFB from 1 st stage of cathode to 2ndly of out put transfomer
around 4-5 dB of NFB and replace final stage coupling capaciotr 0.68uF to 0.2 uF .45 is non NFB.46 is
only 1.2 W Power I got . very great sound ,like a RCA 45 .but a little bit different.
clear sound from low and mid .so 45 obtain very clear sound from low to high
therefore 45 Single Amplifier is , I guess better than 300B SE original even 2A3 RCA SE,only 45 is around 1.5 to 2.0 W rms.problem but enough to use living room with some over 90 db/m speaker system.
if you use big size of out put transfomer will be get good sound from 45.
46 is g2 connect with plate .can be usr 47 triode connection ,but sound get like a pentode. 26th Feb 2005.

Appendix 3

Old Europian Mazda PEN45DD Single Ended Amplifier on 2 may 2006 skematic

PEN45DD SE Amplifier

Appendix 4 45 SE D.I.Y45 SE D.I.Y

Appendix 5 Komiya Amplifier

As you knew 6DZ7(GE) are one of EL84 family and 2 of EL84 are in one packages
yesterday one of my friend Mr Komiya sent one of picture of his new 6DZ7
triode connection push pull amplifier.!!! he said how about it's.very cute isn't it ? !!
picture shown next.Transfomer are all Tango.1st Feb 2005 .
6DZ7pp Amplifier
Pre PHONO mini here to go

Appendix 6 the other one of friend of mine Mr's AmplifiersMr Fukunaga and Hana

Some day afternoon I got a letter from Mr Alex Mousseau USA .how to build up EL84 SE ? then built up. he are going grown up his Amplifier to EL34 SE . Mr Alex Mousseau's Amplifier.he said American high school boys Amplifier

STC Amplifier make easy to brew !!

STC Amplifier easy made one 2002

Must be seach good small transformer for single ended amplifier.if will be get one of them how about build up this amplifier .small power but
you can move woofer !! sound is tight but many biginner likes this small STC amplifier.please see my web siteSTC Amplifier how to make.

EL 84 Single Ended Amplifier from Spain by Narcis and Patricia Jane2007

Jane I got mail from Spain whoes are Narcis and Patricia.they would like to build up one of EL84 Single ended Amplifier.past one later here to GO

EL 84 /2A3 Single Ended Amplifier from Germany.his EL84 SEMr Durandal 2A3/EL84SE Amplifier on May 2008

Tripath Digital Amplifier by Lagarto Mar 2007

Do you believe better than Mark Levinson ? here to GO!!


Oct 19th 2008 my C-Moy Amplifier

EL84 Single Ended Amplifier D.I.Y again Jan 2016

Schematic diagram show next. just same circuit of before. 5K ohm of impedance Audio Transformer using.

EL84 Single Ended Amplifier D.I.Y 2016 Jan

EL84/6BQ5 Single Ended Amplifier D.I.Y on 2016 Scematic Diagram

71A/12A シングルアンプ

71A/12A Single Ended Amplifier DIY

Dr Tim Williams how to brew KT88 Single Ended Amplifier

Dr Tim s AmplifiersFrom Australia......please vist this site...

KT88 Perche Drive by Tim

USB Head phone Amplifier

USB high voltage version Yaha Head Phone Amplifier on 2013 Nov

EL3N Single Ended Amplifier

EL3N Single Ended Amplifier D.I.Y EL3N Single Ended

1626 Single Ended Amplifier DIY

1626 Single Ended Amplifier only 1 WSmall Power but Good Amplifier

Good Speaker

if one's has good speaker system easy to get good sound from small power amplifierPorco Rosso

2A3/45/71A compatible SET in Chile 2013

Sound from big speaker system from 71A 0.7 W power amplifier

How about 4P1L Single Ended Amplifier D.I.Y

4P1L Single Ended Amplifier DIY 25th May 2014

4P1L single ended amplifier Nov 2014

4P1L Single ended Amplifier Triode/UL Nov 2014

Start listen Music4P1L Single Ended AmpAmplifier D.I.Y

PCL86(14GW8) Push Pull Amplifier

Small Push Pull Amplifier for HeadPhone and for at home

5687 PP Head Phone Amplifier 2008

5687 Push Pull Head Phone Amplifier

ECL82 Push Pull Amplifier

ECL82 Push Pull Head Phone Amplifier

My Recently Music source getting from Raspberry Pi B+ and USB HDD 1 tera without CD player and DAT

NET WORK in my house

Raspberry Pi B+

Sound is getting from Raspberry Pi B+ under Volumio

Sound getting from next place

sound getting from here Feb 2017

Volumio Raspberry Pi Music server and Pioneer DAT D-06,off course still using Vinil(LP)) player

Component how. where to get

KuK Audio

many replacements parts are get from KUK Audio China

edcore transformer

Hammond transformer

Many person using VT4C.COM VT4C.COM

Where can you buy Electronics components JapaneseAcoustic Dimension from Europa also can buy Japanese Transformer and components

Ask Mrs Mable Mable Audio

300B Single Ended Amplifier July 2016

Using 300B Single Ended Amplifier in Chile asTakumi 300B Single Ended Amplifier

I will make one of Kit EL84 for sale soon(may be)....USD $ 400 using Japanese Transformer

new amp EL84

Only Chassis ,,new EL84 Single Ended Amplifier D.I.Y ......

EL84 Kit

Aitendo Co Japan ,Chinese semi kit USD $ 40 without valves and transformers and chassis

China kit

Made in China

Easy EDA

Online Circuit editor by EasyEDA

Link to south America Auidio philes Como Armar un amplificador a tubodetalle

mp3 site

Free MP3 Site , any kind of Music can get//sometime change domain

Note:In foreign countries it also happens that young people in rural places say that they want to make amps, e-mails will jump in once, in about a few years. Starting from studying electricity, parts, how to procure parts?
I am teaching in a poor English and Spanish at departure from 0 zero at all. Rich are relatively easy. I reply that I should buy this with this, I will reply whenever I do not understand
I promise, I will do a mouthful saying. In a few people a year, there is a person who is addicted to audio crucibles. People who only have a smartphone are serious. How do you teach? Very difficult
It can not be read by sending circuit diagrams etc, and there are various things. First of all, it is recommended that such people buy a PC, from there to the main subject.

Technical from Japan if you'd like to know more ? lagarto / JH1DAS /ex WB4ACI/CE3

'73 de JH1DAS ex WB4ACIHam Radio Site by JH1DAS

From Sakura Chiba Japan 2004 - 2017

Last update 22nd July 2017 from Sakura Chiba Japan( Since 6th July 2004 )

Do not Permit any copy on this web site and do not use for personal and any