First of all the sound demos are not accurate, after engaging a lot of low end disappears, and there is significant boost of volume which is kinda annoying when you try to keep levels equal. Putting it in the fx loop in amp (which should be deafult use case) makes things even worse. So not recommended with guitars or basses.
Then tried to use it with synthesisers with much better results, although phasing effect is very subtle. This use case can fix the loss of low end and volume boost with a bit of tweaking in mixer. Maybe my unit is broken, or maybe this how it sounds. On the other hand build quality is really good. It's sturdy and heavy, makes an impression of quality product.
Overall in this price range I didn't expected fancy things, but I'm sure that there are better alternatives for similiar money.