effects:
timestretching very well!
phaser ok
enancher ok
flanger ok
filter ok

good converters

there is a utility for PC edition (I do not know if works on mac)

UTILIZATION

configuration very simple (if you know a little sampler, see the special MPC: some fawn load / save is similar) and the manual is clear enough.
edition of the sounds / effects is very easy: start / end samples very intuitive.

I find it very useful and precise the "pitch scale": playing with a purpose and time stretching (see above), we arrive at unexpected results for this price (and others)! we is not at odds roland vp9000, but the st224 do very well this whelk.

opportunity to resampling (also) the reasons (!)

opportunity to make the sampling as it jue a pattern (!)

possibility to import. wav or. aiff samples (I succeeded without problem, I read well the manual)

SOUNDS

very good sound.
This little machine is incredible.
good dynamic as well.
its "dark" "dark".

OVERALL OPINION

I for 2 years.
It surprises me every time.
I bought it on occasion but frainchement it plays well with the boss sp303 (I also): the two have a very good sequencer but hurt!
more: st224 has the pitch (and other) that the sp303 does not ...

the most:
pitch scale, resampling "total" sampling "live", timestretching, copy / paste fast shuffle / quantize (incroyable!! more: we just change it live!)

Cons:
Little timing for each song in echaintilloner: around 60 sec for each project ...
-MIDI: a will, but as quelqun has already said, in steps ONLY gate ...