Config simple. Several frequencies in the low attenuation. The phantom power switch of the acts on two channels simultaneously. Another switch allows you to duplicate the output of a preamp (preamp brings out the one on outputs 1 and 2). Gain adjustable in 3dB.
The sound is very clear, so transparent, but I did reference that console preamps .... In any case well above much of a Mackie preamp, and a little lighter than my soundcraft studio. Lots of potato output!
I use it for 3 months. This is great for the price: 769 Euros