Three knobs (level, tone, gain), very easy to use, it engages and it sounds
Its up to the legend (I saw on the forum expert on big muff kitrae, it is the most faithful reproduction of the Sovtek civil war, I have not had an original look for the hands but it is a killer), there are sounds to Gilmour without problem, the pedal is magic for the game lead, thick, creamy, sweet.
For chord playing is very thick, with a nice bass response, you can line without sounding aggressive.
A lot of latitude in terms of gain, good fuzz quite thick and not too saturax up absolute power with powerful bass when you put the gain at the bottom.
Responds very well to different types of guitars and microphones as different lamps (6L6, EL34 ...)
I have lots of fuzz and big muff (including 2 other stomp Under Foot) is the sweetest big muff clones I've tried and most powerful in the bass also, unless she cons gain than my 3 other big muff.
This pedal is consistent with what I have read and heard it (including Comparative Sovtek vs. civil war. Under Foot stomp civil war, the following link http://www.kitrae.net/music/Music_Muff%% 20Inspired 20Pedals % 20and% 20Clones.html)
The great class!
And plus it sounds a hell on bass