2A3 with 6E6P driver

[audiophilediyer]

Hi all,

Just wish to share , Here's my 2A3 SE amp with plate choke loaded 6E6P driver .

More info here:

2A3 SE Amplifier – Audiophile Diyer

 

[matejsirk]

Very very nice build. I like it. Why did not you try loftin white topology?

 

[audiophilediyer]

Hi. Thank you.
I built several 2A3 before, included Loftin White. I built this to try out my hand wound plate choke. plate choke or interstage give different sound character , more dynamic and good soundstage , thats the characteristic of inductive load.

 

[deafbykhorns]

I agree, i have a similar setup yet the 2A3 drives a GM70
The loftin white simply didnt do the job for me as well

 

[6A3sUMMER]

Nice looking amplifier. I bet it sounds wonderful. All my amplifiers are ugly.

I did look at your link, it says 0.027mA. I believe you meant 27mA (0.027A), and not 27uA.

 

[audiophilediyer]

Hi, Yes, I love the sound quality .Thanks for pointing out my mistake ,its 27mA , I correct it right way. thanks!

 

[jmpsmash]

very nice.

 

[audiophilediyer]

TQ!

 

[jazbo8]

Nice build. Is there any basic measurement data available? Love to see how the diy irons worked in this amplifier.

 

[audiophilediyer]

Hi.
I'm planning to write an article about output transformer winding and also measurement in detail.
Will post on my page soon.

 

[jazbo8]

Thanks. Looking forward to your upcoming article.

 

[hpeter]

the increase in higher bass is quite screaming there

 

[Tjj226]

Holy crap. You are a man after my own heart. You are winding chokes and you make your own R2R dac. That is quite impressive. I hope you do more videos and write ups on how exactly you do some of this stuff.

 

[audiophilediyer]

Hi,
I'm making video about output, interstage / choke winding and try to make it as detail as possible. I will upload my R2R video and others too. thanks !

 

[audiophilediyer]

Nice build. Is there any basic measurement data available? Love to see how the diy irons worked in this amplifier.

Hi, I made a little measurements and here's the result. :

YouTube

I need to find time to shoot more output transformer winding video, will upload soon.

 

[Alllensoncanon]

Nice Looking square wave and BW data. Good job on the transformer!

 

[Tjj226]

Hi, I made a little measurements and here's the result. :

YouTube

I need to find time to shoot more output transformer winding video, will upload soon.

I am subscribed to your channel, and can't wait to see information on your transformer winding adventure.

 

[audiophilediyer]

Thanks !

 

[RajkoM]

Plastic clamps on OPT, it seems to me ??
That's not good, from experience.

 

[audiophilediyer]

Plastic clamps on OPT, it seems to me ??
That's not good, from experience.

Indeed!. I'm running out of metal clamp, using nylon cable tie are not the best option. I already apply transformer varnish in between two c core and it stuck together after dried. Also, plastic bobbin are not 100% good for output transformer, I prefer classic paper cardboard hardened by transformer varnish. Some of my transformers are using hardened paper card board, and some are just plastic bobbin.

I already ordered metal clamp material and will replace them once I received. the finished transformer will looks exactly like the one show in video below starts at 3:59.

YouTube