I had great hopes for this pedal to be used as a time saver when recording and it does create some quite realistic double tracks.
I noticed that the extra tracks always played behind depending on the tightness setting. After some research I found that the extra tracks was delayed randomly within a span (10-18 for tight, 32-50 for least tight). I think the spans should have been from 0 to X ms instead, i.e. not always playing behind but also be allowed to play on time.
I did get good results however with just one extra track and a quite tight setting.
In my opinion, there is a noticeable lack of bottom and an increased treble response when the pedal was engaged.
Perhaps it would sound better used in a live setting, but for me going into my computer, this was a bit too much alteration of my tone.