Great interface. I've added it as my second ADAT interface for my RME UFX II and it works great. The channels are clean and ultra quiet (I'm primarily using it for keyboards). The unit is well-made and feels solid. The built-in compression for each channel is also a great plus. My only negative is that it will not sync with the other units when I power them up simultaneously. I have to power everything else up first and then power up the 8P for its clock to sync. A minor annoyance and something I had not experienced before with similar units and preventing me from giving it 5 stars. Other than that, a stellar piece of gear at a great price!