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Filtering Hotladiesguide T Hot Ladies Guide Szh Search My Matches Hot Ladies Guide 6550/KT88/EL34 single ended amplifier

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Turner Audio 6550's 300W rms Australian Amplifier

6550 in Australia

KT88 in Japan
Best Seller KT88 Single Amplifier's Circuit VP-mini88

SV811-3 Amplifier SV811-3 SEAmplifier

New Digital Amplifier TDA7491 ST Microelectronics

Vintage Audio and High End Audio in Chile(JBL Fanatic)

Audio Spectrum Analyzer for PC(free ware)

Export Japanese Components like a Tango,Tamura Transformer,etc.

I am doing build up one of small push pull amplifier on Jan 2008 7W rms

Mr Durandal 2A3 Single Ended Amplifier from Germany

I think 2A3/45 SE Amplifier get best sound than 300B SE and KT88 SE
frequency reponse is from 10Hz to 35KHz -3dB by Noguchi PMF-7WS.
Max power is 4.5W rms under 2A3.

next I will be modificate above amplifier to WE 91B type
circuit diagram is next one and driver is EF86 UL connection type.

2A3 Single End Amplifier is better than 300B Single Ended Amplifier ???
driver using 5687 High current heater Miniture valve, double triode medium mew MU 16-18.
FE-12S is new 2008 model of ISO TANGO in Japan for SE Amplifier.max power is
12 W rms. recomend valve are 2A3, EL84, EL34 and 6L6GC etc.this is an universal transformer so
out put impedance are 2.5K, 3.5K, 5K and 7K ohm.frequency response is from 20Hz to
80Khz at 2.5K ohm and from 45Hz to 35Khz at 7Kohm, Max current is 60mA DC,1.6Kg each.

SRPP is very nice clear sound get for 2A3SE.but It's very difficult to get
enough gain when do you play classic.needed other low gain amplifier before SRPP
driver.I like sound of SRPP with ECC83.some one said 6N2P is good.
even 3 stages direct coupling driver with 6922/6DJ8 is good sound and enough to get
much gain when play Classic.Power is around 5W rms at 3% with Sovtek 2A3 and clear
sound.2A3 EH gold is a little bit expensive than 2A3 Sovtek and Sovtek 2A3 sound is much better
than 2A3EH gold.even 2A3C is good sound to get and very clear and powerful.

Driver ECC88 and 6N1P are more clear and not too much bass but sound more musical.
and I am thinking ,going build up next circuit is ...

Perque Drive for SRPP how to work?
I like 2A3 SE with SRPP drive. sound is very clear as you knew.
SRPP is good sound to get but low Gain and not enough to get sound when
listing all type Classic Music.however if use a u(mew)Drive SRPP to get
more gain than SRPP normal.1st time I used u(mew)Drive SRPP for 6550/KT88 SE.
u(mew) drive is a little bit more than gereral SRPP.some one said 29times.
SRPP general is 26 times.so u(mew)drive get a little bit more gain.this time I tryed
"Perque-drive" with triode and penthode combination valuve like a 6U8 and 6AN8.
result is very good and sound like SRPP and actually output sine wave is same
like SRPP output and much gain from Perque-Drive SRPP.
experiamented by Mr Tetsu Kimura and his nick
name is "Perque" (PERUKE). I don't know what meanning "Perque". so now I can drive
300B easy with SRPP.slightly need adjust value of cathode resistance of triode and penthode
for miner distortion or comfortable sound which do you favorit.
Perque-Drive is Next.

RCA 45 Single Ended Amplifier on Dic 2008

---- 2009 ------- Single ended amplifiers in my room -------

6EJ7 drived 2A3 SEon Oct 2009

Yaha Amplifier for Head phone Headphone Amplifiers

Introdusing from simple headphone amplifier to highend amplifiers
if would like to seehere

EL156(Chinese)/EH 6550/KT88 Single Ended Amplifer D.I.Y on 2009

I am doing to try to building up again an Amplifier EL156 Single Ended
but difficult get EL156 original.so I will use Chinese EL156.still
expensive in Japan.here to

ISO Tango XE20S 2A3/45 Single Ended Amplifier

Schematic and some ditail of2A3/45SE on Dic 2009

Rectifier Tubes charactor lists are next
Valuve Rectifire Charactor

Name	Cin type or Lin type	Ef ----- If filaments	Max Plate Voltages Ep	Max Currents Ip	C	L
5U4-G direct	full wave C input L input	5.0 V 3 A	450 V 550 V	225mA 225mA	32uF -	- 10 H
80 direct	full wave C input L input	5.0 V 2.0 A	350 V 500 V	125mA 125mA	10uF -	- 10 H
84/6Z4 indirect	full wave	6.3 V 0.6 A	350 V max	50 mA
5V4-G indirect	full wave C input L input	5.0 V 2.0 A	375 V 500 V	175 mA 175mA	10 uF -	- 4 H
5AR4/GZ34 indirect	full wave C input L input	5.0 V 1.9 A	450 V 550 V	200 mA 225 mA	60 uF -	- 10 H
CV 378 same as above indirect
5Y3 GT direct	full wave C input L input	5.0 V 2.0 A	350 V 500 V	125 mA 125 mA	10uF -	- 10 H
274-B direct	full wave	5.0 V 2.0 A	500 V	175 mA
5X3 direct	full wave C input L input	5.0 V 2.0 A	350 V 500 V	125 mA 125 mA	10uF -	- 10 H

Name	Cin type or Lin type	Ef ----- If filaments	max Plate Voltages Ep	max currents Ip	C	L
5R4 -GY direct	full wave C input L input	5.0 V 2.0 A	750 V 850 V	250 mA 250 mA	4uF -	- 5 H
5Y4 -G direct	full wave C input L input	5.0 V 2.0 A	350 V 500 V	125 mA 125 mA	10uF -	- 10 H
6X4WA indirect Miniture	full wave	6.3 V 0.6 A	325 V	70 mA	max 40uF	-
6CA4/EZ81 indirect Minuture	full wave	6.3 V 1.0 A	350 V	150 mA	max 50uF	-
5T4	full wave	5.0 V 2.0 A	450 V max	225 mA	max 40uF

note:Golden Dragon 274B is very good tube but very difficult find good one
and original Golden Dragon 274B is face like 5U4G,black corted plate.physically just
same size of WE300B.many GD 274B has mecanical damege inside but sound is very
soft when I am using with 300B/2A3 Single Ended Amplifier.GD 274B is 3rd party.
but we can buy other side of Chinese 274B.I think these 274B is just like 5R4.
of course sound is very different.however 274B Golden Dragon with 2A3 SE and 300B
SE Amplifier made up good sound both Jazz and Classic.

Appe: Easy to made one limited diode for differential amplifier

some where in my amplifier using limited current diode.I think difficult to get
out of Japan and country side.1mA to 5mA current limitter can use 2SK30(Rank) FET
depend on rank of FET insted limited current diode. J-FET has original current like
some mA.2SK30 is around 1mA to 5mA depend on Rank of 2SK30.safix is Rank.and easy to
make one limited current diode with one of resistanse within 1K ohm.
please see next figure can help you when do you would like to make one.

if would like to know 300B efficience plate loadDatahere.
if would like to know Japanese AudioTransformers List
if would like to know more information for tubes charactor please see
Duncan Amp site
Load List for DHT and IDH Penthode
Good Luck ""building up Good Amplifier"" if can you get good Audio OUT PUT Transformer.

if would like to see 6550 Amplifier SE again

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impedance of power tubes

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Filtering Hotladiesguide T Hot Ladies Guide Szh Search My Matches Hot Ladies Guide 6550/KT88/EL34 single ended amplifier