2A3/45/71A Single Ended Amplifier(ISO Tango XE20S)
Just starting brew 2A3/45/71A Universal Single Ended Amplifier on 1st Jan 2011
Just started brew 2A3/45/71A Universal Single Ended Amplifier on 1st Jan 2012.This Amplifier
is originaly 2A3 Single Ended Amplifier for 2A3C(NGG).also can be use as 45 and 71A Single Ended Amplifier.2A3 is 2 position
of condition of 2A3. one of RCA 2A3 type and other is 2A3C NGG type of 2A3.basically replace bias by 3 of external connector(11 pins)
just like octal US Base. but these are 11 pins Base.connector are more stable for amplifier.
this amplifier is order from audiophile of turky.kayra is name of doughter of Audiophiler.
almost schematic diagram are next.
V2 Model small versin up
components:Teflon UX socket,film 800V capacitor,Silmic for cathode bypass,nichicon electric
condensor,seiden high end rotaly switch,Toichi copper film capacitor for coupling capacitor.
tese capacitor are high end model capacitor in Japan.resistance are AMRG and Kiwame.
case is Takachi SRDSL-9HS long norse box.potenciometer are cosmos.RCA terminal are
super tron. binding post are big gold.Transformer : 2 of ISO Tango XE-20S and PMC518 and
Hashimoto(Sansui)PT-160V for 220V power supply high end type transformer.
cost of Amplifier is USD $ 3600 dollars on Jan 2012.this amplifier can be use tubes of
71A,2A3 RCA, 2A3C,2A3B, 45 and Emission Lab 45.this amplifier can not use WE275A.
Rectifier tube is GZ34 or GZ37.even can be use 5U4G too.much better use GZ34/5AR4
This amplifier using T-Cap(CU) high end capacitor as coupling capacitor.
T-Cap made by Toichi Industrie Japan. 4 of capacitor cost are USD $ 180 dollars.
and signal resistance are AMRG carbon resistance.for adjuste filamen voltage is
using shottkey diode because Schottky barrier diode can drop 0.4v so you can use intead of resistor.
sound is quite very nice 45 and 71A single ended amplfier.71A is ,just I don't believe
power of 0.7W rms.very nice musical sound got.I like 3 type of tubes as single ended amplifier.
if would liket to use Schottky diode for power supply or filament power supply,
you can get good solution power supply.S/N is very good.
as 71A and 45 Single Ended Amplifier sound is so nice.71A Single Ended Amplifier is
so good even very small power.
in side are high end components off course using Toich T-Cap(CU)
Kayra 2A3C Single Ended Amplifier on Feb 2012
Kayra 45 Single Ended Amplifier on Feb 2012
Kayra 71A Single Ended Amplifier on Feb 2012
Owner's room for Audio in Istanbul Turkey
Mr Karamanli Audio room in Istanbul ,Turkey
2A3/45 Single Ended Amplifier in Turkey on 2012
Mr Karamanli Audio room in Istanbul ,Turkey on 30th June 2012
Just a parts of Mail from Mr Mümin Karamanlı of Turkey on 27th June 2012.
♪♪ He said "sound quality looks like a nightingale."♪♪
source and speakers :CD Player is Naim ,Pre is47 Laboratory ,Speaker are Supravox.
Supravox : for Tweeter feild coil by active 11-12 volt DC.
Finally; I carried the speaker and fixed to amp; the result is unbeliveble.
The gain is still to high, I never open the knob too much.
I also tried different 2A3 tubes ( the stock one has a good bass; NGG 2A3C has more detail and powerfull.
Yesterday, I tried the PSVANE 2A3B and I fiqure out it plays more stable
and less excimet(?) and I love it more than NGG 2A3C.
Just turn off light in the room ,!!!!!!
And One of Amplifier Builder in Europa ,made up same circuit as 2A3 Single Ended Amplifier on FEB 2013
by Mr Sebastien Visiedo from Italy
one of copy of Kayra Single Ended Amplifier by Mr Sebastein Visiedo in Italy
I did some listening today, comparing it to the 2a3 and still the 2a3 is better. The 2a3 is much detailed and the music more articulated.
I built the pcl86 to listen to music most of the time and I am listening to the 2a3 only when I want to enjoy good music.
comment from him ,I got mail at 22nd Apr 2014 which he said.
really 2A3 single ended amplifier is very good sound stage. enough to use at home if do anyone has good efficiency speaker system.even old big KLIPSCH.
With white cover to see 2A3 Single Ended Amplifier
2A3 Single Ended Amplifier with his system 2013 Feb
71A/12A Single Ended Amplifier Sep 2013
300B Single Ended Amplifier Apr 2016
Encore 300B Single Ended Amplifier -this amplifier same circuit of Kayra 2A3 on Dec 2017