Already old machine out in 1996.
No need to describe further cractéristiques today.
It's just an opinion compared to the multi-effects that have been around (and there were many!)
Well it is still largely the road compared to what exists today.

UTILIZATION

Config level, it has a lot of things, not so easy to set up, need to spend time there.
Edition intuitive, when we understood the philosophy.
The manual is really not that good living wage.

SOUND QUALITY

So that's where I think it competes with what is still largely out today (in the same price range of course, or about 500 Euros today)
The reverbs sound natural when you want to do an effect like "space" it competes well at home with the TC Electronic M-One-or D-Two.
I connected my 2 console aux send / return stereo, primarily for use with synths.
In varieties of effects, you can do really amazing things by spending a little time. Virtually everything is configurable.

OVERALL OPINION

It's been years (7 or 8 I forget) that I use and ja'i had the opportunity to make many comparisons, given the outcome, I'm not ready to part with it.
The quality / price ratio at the time was excellent.
What I like most is the "natural" effects and reverbs that can not be found today on the high end.