Considering the price (you can get 3 cheap clone pedals of modulation efects for the same price, whereas with this one you get 11) and the demos (specially the ones in stereo), I was already surprised, but when I got to play with it, it just blew my mind.. I've tried and played with pedals of all price range (including the famous toneprint pedalboard), and I must say that the first thing to consider about this little yellow box is the excellent sound quality, even in stereo (in my case, before a 32-bit sound quality loop station). Secondly, it is amazing how well it captures the different tones and gain ranges of the overdrive pedals stacked before it, it remains really true to your original sound and then modifies it accordingly to the settings you choose. Only once it kind of lost the signal, but then it never happened again. The only weird thing is the one that another user already mentioned: while active, you can tweak at will, but if you want to bypass and come back to those same settings, you're always forced to save that configuration as one of the è possible presets. Solution : always have a free preset slot to keep on with the experiments (which reduces your presents to 6, but still its enough for me). And yep, the sounds you can get are really top niveau. The tremolo is the only modulation that I haven't got well (while it is usually one of the easiest to configure), but I guess it's a matter of keep discovering! Definitely recommend it and I'm looking forward to try other Flamma pedals in the future, peace!