Ok, I freaking love this new board!
I believe it's the same preamps as the F series recorders. They are lively and quiet as hell.
The built in effects surpass my Soundcraft Signature board by a long shot (and those are lexicons in the SC). Built in blends of slight reverb and others in dedicated "vocals" with 4 different flavors. A similar one for "drum ambience"....and they are perfect w/o having to fuck around with different blends on my own. There are other generic effects as per standard issue on just about any board.
Digital signal routing so there is only one master EQ and effect setting....which you apply to whatever channel you want.
Built in SD recorder does 20 discrete tracks...pre or post effects.
48v phantom on groups of channels (not just global on / off).
7 simultaneous different mixes, and the outputs (sans mains) are 1/4 that can be designated as high-gain headphone amp or low gain line level signals for monitors.
Super intuitive as well ! No instruction manual, but I figured out every feature within an hour.