The artist I believe is Apparat ( Sascha Ring). I would classify this as "Shoegaze" treatment which is usually a combination of Sound Design & Sound Treatment. In this case it sounds like several layers of different reverbs building the sound up.
Here is some information on his Berlin-based Studio. http://www.apparatstudios.com/studio/main-control-room/
You may also want to look into the music, sound, and techniques of Ulrich Schnauss.
Ho, yes, thank you.
I read somewhere there is 2 artist : Music by : Dustin O'Halloran - Sascha Ring; But i don't know.
In an other forum, i find a track wich content an similar sound : I will ask what is it to the author