which is the right one and why?

[Wik]

 

[Galu]

This post does not seem to belong in the "Everything Else" section of the forum - "Solid State" would seem more appropriate.

Again, Wik, you ask a headline question, but give no helpful information.

The "right one" for what application?

 

[Wik]

how about the best sound quality from three schema ,, which one?