To emulate the special analog sound is very difficult. Jürgen Haible built a great clone:
http://www.jhaible.heim.at/compact_clon ... clone.html
I tried to make a VST-plugin, it's not finished yet, but it already sounds quite nice, I think:

http://www.service-1.de/music/tdphaserdemo.mp3
Edit: Download on the second page of this thread.




