The sound is excellent, and for the price, 11 sounds is awesome.
2 annoying very big flaws though: one of them is the pre-sets. You cannot deactivate them, and when you turn the pedal on, it necessarily go to whichever pre-set you set the pedal too. You got to jiggle the knobs at least once to get the pedal to actually respond to the knob position.
The presets are idependant of which effect the pedal is set on, so if you're set on chorus, but your preset is flanger, it will play flanger. Would be great if among the seven preset, there was a no-preset option. Big design flaw in my opinion.
The other big issue is: the effect sometimes takes time to kick in or doesn't at all. It's really disappointing to turn on a pedal to hear not effect. The presets are supposed to make it easy to turn on the effect during a song, but it's just not reliable on that end, which in my opinion is a deal-breaker.
Flamma is a great brand though, so maybe the smaller FC05 is better (it has no presets).