It has everything to seduce, effects, connectivity, expression pedal etc. ...

UTILIZATION

Use rather easy, not too much trouble to set it off, the effects are easily configurable to be just a little history of presets which you do not understand much

connected to a low 4cordes schecter ghostflame with EMG pickups or guitar schecter omen-6 (yes yes indeed this multi doing very well on my guitar)
and in addition a small preamp / effect behringer BDI 21 and currently a behringer v-amp AMPIRE (preamp bypass and speaker as well) connected to a big speaker yamaha (15 "+ tweeter)

SOUND QUALITY

In terms of sound, multi-effect is doing very well, with a + for the phaser, which is devastating for the slap.
the side of the disto all is a wonder (I can be like a simulation amp distortion softer but I will not complain)
for the synth is a little flop, the attack is not great, the sound is too metallic, and to succeed in finding a suitable AC takes time.
Then for the different effects are all well, except maybe the Octaver gives a metallic sound too, and the pitch shifter too, the ring modulator is completely useless (which ca be used to effect that sounds more notte that we play totally random?)
wah pedal out a good sound (although on a low this is not the best effects)
compress / limit plays its role very well, with a distortion makes it sound really good
the noise gate is very useful in certain cases where it starts to whistle.
for other effects I have not had time to try everything, but overall the sound is good

edit: after a rehearsal I must say I was very happy, the sound that comes out is really good, really face fuzz effect with bass and guitar that comes a very good sound for the rest not really tried everything

OVERALL OPINION

I use it for one week and I'm glad
this is my first multi effects for bass (I used one of my pre amp)
the price / quality ratio is excellent, especially considering the number of effects and the expression pedal etc. ...