After all, this is what i bought it for. However:
Bass - the control doesn't respond too well and "booms - woofs" like you put a blanket on the speaker.
Notch filter - works ok only when you put on "d" - doesn't seem to make much of a difference when you put it elsewhere.
Mid -cutting does clear up but seems to do so only for certain frequencies - when you sweep you don't notice much of a frequency difference.
Presence - totally unacceptable. gives no presence but only boosts piezo quack along with a feeling of high frequency distortion. Treble - not clear when you boost, rather scratchy and hissy.
Noise - they say it's super quiet but these guys haven't really seen quiet ACTIVE gear....it adds quite a fair amount of noise when you crank up the volume knob. Things are better when you set gain high - if you have toddler size fingers to manage to twist that little tiny gain knob - and volume low but then you have to set the eq again!
Handling - ok, i knew about the little knobs, but like i already said that gain knob is TOO small - and unfortunately, for reasons just mentioned, it's NOT a "set and forget" knob like the manufacturer claims.
Quality - feels solid and sturdy, but i read a report of a user who used it for a long time and reported problems on the XLR plug because of its position - it's vertical and probably gets stressed over time because of side pressure from the female plug. Plus it's more risky for tripping over with someone's foot.
I am not a sound expert but i claim to be a very experienced musician. As a reference point,I inform anyone interested that i tested the Para Acoustic DI with a) AER compact mobile 2 acoustic amp and b) with A & H wz4 mixwizard console with MACKIE srm 450 v3 speakers. The eq of the mixwizard is a real miracle, so pristine and musical... And it's preamps are SO quiet and noise free.I thought the Para Acoustic would be like that too... All gear tested with nylon string guitar (SCHATTEN DESIGN piezo) and electro acoustic guitar (martin with integrated FISHMAN preamp.)
At the price of 275 euros I expected something MUCH better - especially since this a rather old DI box which has covered the cost of designing for its company. Also based on reviews by almost anyone on the internet i thought it would be something extraordinary. What a disappointment! I think it's worth something like 100 euros - 120 at most. 275? No way! I sent it back immediately.