thank you guys,
well it seems as if there would be no real alternative to the transaudio product at the moment.
"to Subbasshead: This Sanken mic is cool. Listened that ants example you can find in the web. 3000$

and discontinued."
"to philiper: I have heard Anne Kroeber at last School of Sound in London.
It was a great experience to listen to her.
So you mean a original Frap Mic is something different. No one produces such microphones anymore? How sad..."
I am researching the Web since more than a year now, to find the right product.
Maybe I will buy something cheaper to start experimenting until I find the right
soloution out there.