A 400€ knob, basically. But damn, totally worth it. Feels good, looks good, works good.
When my mackie big knob died i looked around for a new controller. This one caught my attention, mainly because of the 4 headphone outputs, mono switch, and polarity switch.
Honestly, just those three features are worth the price for me, as i often mono-check my mixes and also do mid-side processing. These two buttons completely removed my need for a separate plugin in my daw to do those things.
I've had this unit on for weeks at a time (not recommended i guess but a good stress test for any piece of hardware), without ever turning it off. Only one time did i have a problem with it sounding kinda weird, and a quick on/off/on fixed that problem.
The only drawback for me is that you cannot output to multiple outputs at once, or have multiple inputs playing simultaneously, as you can with the big knob.
Overall an amazing piece of gear, vey happy with my purchase.