Doepfer

That seems to rule it out as anything as elaborate as a filter! So 
  does it just mix the output of the other pedal straight back into 
  it's input, via the pot maybe? So for your $150 you get a box with 
  some fancy graphics, a few jacks and a knob?. I'm even more intrigued 
  now

  ok, but did you have listened to the samples?
  I have and I get more impresions from sound that how it looks and what is inside
  and other thing is - I found it as a propose to look something new in Doepfer modules
  and i am totally into weird, dirty sounds, so that was very good example by my oppinion
  r


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