Before buy the module I've searched a lot online to check demos and its sound quality using it directly in the audio interface and all the demos I've heared were very good. The flow signal it's simple to manage, and I like it. I don't know how they get so good sound quality, but I've used it too directly from my audio interface (and I have a very good one) and the result was so different from what I've heared in the demos. I spent hours on configuration but I've never felt so troubled like this time.