Work very good, no issues at all. Only minus is the tweaking of Main and Headphones, it's the same knob, and its stepped in db, so it takes a long time to turn down and up if you which between monitors and headphones. The stepped db setting is perfect when setting input though. And I miss a second headphones output.
The built in effects are as good as it gets, and you can set effects on the main output, very good for adjusting monitor response with EQ, and the effects can be recorded in as well, it's an option.
It's pristine in sound quality!