Tested with a Gibson SJ-200 equiped with an anthem system and a Martin D16 fitted with a fishman prefix.
It allows for some tone shaping with the built in eq, though i'd rather see frequencies instead of notes in the knobs. Still, you can't add anything that your guitar doesn't have, meaning you either already like the sound of your guitar or you don't, and if you don't, this is not going to help that much. The Quack of the piezzo of the fishman is still there and this unit does little to attenuate it. the anthem is nice but this doesn't make it nicer.
Tested it against a tech21 acoustic di and this one really adds something to the table besides the eq and di features. so in the end I opted for a para driver di instead of the baggs because it allows me to sneak a little saturation underneath the guitar.
The place where they put the xlr is not really helpful for cable bending. too much stress of the cable.
All that said, it's still a very capable Di, and much better than most. I would rather have this one instead of the PZ-DI or the Fishman Aura that have more or less the same price tag