After a lot of searching I finally have found what might be completely obvious for others. Anyway Ultratap has a very nice Swell Preset. You see it on the left side. So for a nice Feedback Effect now the question remains what kind of tonal synth element one has to put on the right side to fake overtones/harmonics which normally are kind of sinus waves. I have tried Synthonizer and HotSawz but nothing really nailed it. Do you have some advice?
