I'm a Live Sound Engineer,
I had to use that desk quite a lot of times now.
I will be completely honest,
the Mic Pre's are really weak, and the summing for the stereo out sounds hollow and under a blanket.
The effects don't compare at all to a TC M3000, are qutie inferior.
The EQ is a bit nasal, of course it's flexible but it doesn't sound good at all.
Small PA companies love them, because they can take to small gigs, leaving at home external rack processors (effects, graphics, gates , compressors), they are also quite easy to Operate.
But ask any live sound engineer and you will see that no one likes their sound at all.