need schema like this beside dos?

[Wik]

look carefully the 4 transistor is pointing to same direction
any diy schematic like this all around the world?

 

[rayma]

Most schematics are done this way.
DC current flows from top to bottom.
Signal goes from left to right.

Here's free schematic software.
https://www.digikey.com/en/resources/design-tools/schemeit

 

[steveu]

It's just a "3EF" quasi like the crown DC300A.

 

[lcsaszar]

It is called quasi complementer output stage.