Can this pedal deliver all it claims? In short no...but let's be realistic, if it could create perfect harmony as easily as it claims then we'd be in heaven! So, realistically, what's good and what isn't so good?
Construction: Solid Boss construction, no complaints here. Controls are simple and well laid out 10/10.
In Use: I'm not sure why but this pedals performance seems variable. The quality of the harmony produced depends on what you are singing in the first place and what you are trying to create. Sometimes the harmony created appears to be 'quite realistic' and at other times it creates a harmony which is awful or just so obviously non human generated.
I think it's a pedal that takes some getting used to. To get the best out of it you will have to work at it and be open minded. It won't instantly create perfect harmony all of the time. Sometimes it does what you expect, sometimes it doesn't. I think the bottom line is that this is very much more useful as a live tool. The recorded harmony effect doesn't really stand scrutiny on recordings, but this is just my opinion. I will continue to experiment however. 7/10
Thomann Service: Excellent 10/10