I am making a EL84 tube headphone amp.  A single end triode design similar to Mapletree super II.  I have a pair of Tango H-5S SE transfomers.  On top of cases, there are wording of "balanced windings"
 
What is the meaning of balanced windings?
 
thanks for your help in advance.
 
Sam

I used a pair of Raphaelite before I found the pairs of Tango.

They worked perfectly but the sound is a bit on the warm side.

Here is a pic of the headphone amp I built .

Looks nice. How about a schematic and a couple of internal shots?

 
This is my 1st tube amp built.  Mostly, I used parts from my tool box.  The pair of solen were later replaced by a pair of Auricap

schematic was not much to talk about.  It is based on the Mapletree Super.
 
 
 I modified it to AC heater cause it is cheaper and easiler.  I  used a pair Raphaelite output transformers  instead of Hammond as it has higher impedance.  so I can use a cap of lower value.  They are  cheaper and more choices.
 
I even try a pair of Mundorf Silver oil 4.7uf cap but I do not like the sound.  I settled with a pair of Auricap. 
 
Last night, I tried to change the cheap Raphaelite Output transformer to a pair of vintage Tango H-5S.  I end up with smoke from the power supply. pretty scary!!!.

 
 
 
 
Anyone can tell me if I am using the right type of Tango  tranformers? 
 
Regards
 
Sam

Wow looks nice!!!  Schematic?