It's definitely an improvement over the wallwart.
It's one of those products that you think to yourself, do I need this, will it make a positive change? After getting to test drive one at home, the answer is unequivocally yes. Seems to give a better sense of stability, both with images and pitch. And for those that could use it, has a 12volt plugin to power the Dynavector P-75 phono stage. Haven't tried that yet. Looks like the US retail price is $400 and will be hitting stateside soon.
One of those add-on products that, having to give back, I instantly missed. So yes, I'll be getting one when they arrive.