I was in Germany not long ago and from what I figure is that it's basically Hard techno which is composed almost solely of drum sounds, or other distorted stuff which is then used almost like drums... It is "cold" (who is 2 say what is cold !?!)... also generally dark, fast ... very mechanical like sounding... the groove is very straight ...
I've also heard some1 say music for marching (just like a soldier)...

:P

Don't like it much although I did have tracks on Shrazwerk 5 and 8!!

Z