As a huge Byrds & Beatles fan, I bought this to try emulate a 12-string sound on my 6-string electric guitars. Rather than being just an octave pedal, crucially, it leaves the high E and B strings the same note doubled, like an actual 12-string guitar
Pros: it really gets the chime sound, particularly good on semi-hollow guitars to get that Rickenbacker type sound. I don't know how it does it, but somehow it can differentiate between notes as to what should be unison or octave
Cons: For a >100euro pedal, it literally just does one thing: makes your 6-string guitar sound like a 12-string. How about adding a compression option, Digitech?