I agree with all that was stated in previous posts. It is really nice, high quality mixer. The only con is that there is no stereo return for aux sends. I have Pico DSP and FX Aid, both stereo outs, so I am using mono send and mix both stereo outs with Doepfer A-138s and patch them to Mix In on Performance Mixer. I really thinking about stereo channel expander as I am using a lot of stereo sources - Rings, E352, BitBox.
Another "con" is that phone output is very loud. I have it on minimum all the time. I use Sennheiser HD 25-1.
I would suggest to use potentiometer caps with pointer on gain knobs. Sometimes I can not see where the gain is. Especially when using two channels for stereo application.
Besides those little things it is amazing mixer.