Just doesn’t sound pleasing to the program material I put through. My problem was mainly in the low end. 808 kicks for electro, etc. Low shelf not deep enough.
When I got the BiG SiX the difference of the EQ was completely evident. I’ve written about that here
That said, the EQ work, does not make your material sound worse, and the sound quality generally is very clear and sounds good.
Just don’t buy it because of the EQs 
If I had a proper studio and it was my trade, I would dub out on this all day long.
Edit: also forgot to mention this is a fully analog unit, with not a usb cable, sd card or digital effect in sight. It’s all about mono channels also, except the returns, main and monitor outs, and the subgroups can be used in stereo configuration.