Let's me show you EL 84 Single Ended Amplifier D.I.Y
EL84 Single Ended Single Ended Amplifier
Amplifier dont make NFB this version because in general sound get tight when made some kind of NFB.NFB why need ? because Pentodo DF is very low so does not get good DF at low
frequency.and get high frequency response .so depend on sound you like .make some low NFB take more comfort sound to get.depend on your ear. UL is not NFB but around 3 dB~ of
equivalent NFB got. same effect of low NFB will be get. if doesnot have SG tap .please use a half of wound of transformer. same way can use UL.UL is just like sound triode.
if can you use NFB please adjust level of negative feedback .if use over all NFB then get oscllation please change 2nd side connect positive and negative connection.
any way sound is tight when use some kind of NFB. NON NFB is good for human ear. very bright and very comfortable.but not at all please use some kind of NFB for better sound.
NFB is depend on your ear.and speaker system.off course speaker system efficiency at least need 96dB/m/w. either I am using 91dB Speaker system.I'd like to get more than 96 dB
Speaker system. pentodo amplifier DF is around 0.5 so have going up at least 2. can use as good system.UL is much better to use .easy and get good sound.Triode valves original
have 2 of DF.triode connection of EL84 will be get only 1.5 W so please use UL.will be get more than 3 W.enogh to use 91dB speaker system in small room.
EL84/6BQ5 Single Ended Amplifier with Daniel Speaker 2006 Chile
Philips MINIWATT EL84
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
If you need information of any valves,please check up by Duncan Amp Site.
And if would you like to study How to lean build up valve amplifier but this version is only spanish.
Start 5th Mar 2017
EL3N Single Ended Amplifier re-build up on Mar 2019
EL3N Single Ended Amplifier re-built on Mar 2019
CCS + EL84 Single-ended Amplifier by Genaral Trans Sales PMF-5WS on Dec 2018
Do not think that such a poor amplifier will produce sound, depending on the speaker you can get a loud volume.
DiY Amplifier is not too difficult, I think that the presentation is very good. Be sure to use speakers with efficiency of more than 90 dB with 8 Ω.
The sound of 3.5 W of 2A3, the sound of 5 W of EL 34, the sound of 5 W of 6L6 and the sound of 4 W of EL 84 come out differently,
which are related to the internal resistance and are related to the impedance of the output transformer, of course. Each sound is different.
A thick vacuum tube is thick sound, and a thin vacuum tube gives a thin sound. They are all about the same 5W. EL 84 is a thin vacuum tube.
Of course the sound will be different from that shape.
Some people say that sound is hard, but it is also determined by the structure of the ear, listening speaker and room. Even with just 5 W amplifier the tube amp sounds awesome sound
Structurally thin vacuum tubes tend to have thin sound. The thick tube tends to make the sound thicker.
If you want EL84 single, 6L6 or EL34 is recommended from experience. EL 84 tends to produce high frequency sounds that are too nervous.
6L6 series and EL34 series require large output transformers because they consume much power, but we can produce reasonably satisfying sounds.
what do you think which is better to build up.one for you.
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.
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(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.
Power transformer for audio
like this.fixed position of transformer
Power and Effiency of Speaker System
At least 90dB/m/w needed but enough to use in small room
translate from Japanese version of EL84 DIY
6AU6 It was a single amp of 6SH7 drive. It was also about 17 years ago and transformers were tango
H - 5S It was a transformer of the Orient core of the black bifilar figure. After that it became 45 single and then
It became PEN 45 single and is currently in use in South America Chile. It is an amplifier with only 3 W UL connection. 6SH7 is also made in USA
If it is not Hitachi made mesh plate here brightness increases to sound. Very tight sound, the metal pipe
It was strange that it would not go like this, too. It should be the same standard, but the trend of sound is different (45 single amplifier)
6SH7 say 6AU6 MT tube as compatible vacuum tube, but using this will make a completely different sound.
This also happens with an output vacuum tube. 6AQ5 and 6V6, 807 and 6 L 6 And since the structure is different, I think that it comes out of course to the sound.
There are many such examples. Who defined the compatibility? It is strange. Note: When using it as a 3-stage amplifier as a feature of the 6L6 and EL84 series, the power is very low. If you emphasize one characteristic
Good, but very little about the power is obtained. The common point is 1.5W or less in a single.even 6AQ5 under Class C will 10 W rms but RF frequency.this 6AQ5 and 6V6 can be use as
A2 Class A will be get much more power than Class A,which means 6V6 and 6AQ5 can be use as A2 Class Amplifier as much more power.I don't tried yet.A2 Class Amplifier.
How to build up easy RIAA for LP player
Radio Garden warld wide live radio
any where place in the world ,any place of country side ,you can watch try this site
How about Raspberry Pi B+ or Pi2 for Your Music Server with small IS2 DAC
Raspbrry Pi B+ and Pi2 ,Most small PC using as Music Server with I2S DAC DIY on Mar 2015
Raspberry Pi B+ ,Volumio 1 Tera USB HDD(SATA))y USB DAC es FN1242A Single DAC on 2015 Enero
Work Station Raspberry Pi2 and Music Server Volumio and Cantata MPD show alubum
NanoPi-Neo2 DAC DIY
Any one can build up micro Music Server by your pocket money,very cheap but good
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
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
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
EL 34 Single Ended Amplifier .just enough to use your living room.
Testing proto type Back View
Free Movie and TV from USA 、very nice site if do you understand english
About Noguchi Transform , rumored to close from the mid-2018 and closed on 30th September New information is the same in the same place
It becomes. Please browse. It seems that we can secure the lineup of Noguchi Transformers. I hope this will be more flexible with good news.
Site started on 2018 30th Sep Original site is only Japanese but they said will be update by in English.
Audio Transformer informations
if would like to get PMF-5WS transformer . call me by mail and send you to over sea . if can you deposite my account but only bank to bank transfer.this kind audio transformer
is each one USD $ 3５ dollars.and power transformer is depend on input voltages where you using. USD $ 190 dollars for 220V area.for EL84 single ended amplifier.
if would like to component from Japan. I will find for you. ask me by mail.mail address indicated end of this page by webmail.commision is only 20 % as labor.
show you 3 type of Transformer one is Touei Transformer and other one is Kasuga Transformer and General Transformer Sales .they 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.
and General Transformer Sales(ex Noguchi)PMF-5WS .
almost each other diffrent maker but almost same price.
General Transformer Sales CO PMF-5WS (ex Noguchi) 70mm X 50mm x 49 mm has UL sg tap
TOUEI TRANSFORMER OPT-5S 85mm x 46mm x 55mm
TOUEI 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
KASUGA TRANSFORMER OUT-54B57 77mm x 44mm x 49mm 60mA Max
KASUGA 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.
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
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.
Radio Garden warld wide live radio
Hatt Audio Laboratory Japan --Audio Transformer Factory--
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.
Speaker system Made in Chile .Cajas Acusticas Chile with 45 Single Ended Amplifier hereto click.
My audio system 2005
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.
Old Europian Mazda PEN45DD Single Ended Amplifier on 2 may 2006 skematic
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 .
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 !!
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.
EL84/6BQ5 Single Ended Amplifier D.I.Y on 2016 Scematic Diagram
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.
I think that it can be used as a kit of EL84 single amplifier if these parts are used.
In addition to the chassis, the power transformer uses PMF-150M or PMF-100M. The choke and output transformer use Toei trans OPT-5 WSR.
A kit for sale costs around $ 900.(this price include Alps pot ,capacitor and knob ,binding post and valves , shipping cost too)and if would like to order need one month for
wait for order power transformer of your country voltages.which ever 120V,230V,220V etc.after deposit my account.if would like to more give me mail.
This kit plan not include holes on chassis so you have to make holes for valves and transformer.so include chassis punch of HOZAN DO. like next picture.
Chinese prodact has problem of audio transformer but I am using all transformer are made in Japan so sound quality is different than chinese same kind of amplifier even
same kind of Japanese amplifier are mede in China transformer.cost of transformer are different with Chinese.all component include USD $ 900 dollars in Cash.I will show you
demo amplifier show as soon as possible .means later show you by you tube.