The opinion of the team: the Emma Onomatopoeia is like all the products of the Danish brand: unpronounceable! Well that being said, it is still an interesting effect pedal! This is a saturation halfway between a boost and an overdrive.
To put it simply, it has 2 saturation stages, managed by the gain and saturation knobs. Basically, the gain knob will act more like a boost and the saturation knob like a distortion. It's up to you to balance the 2 to find the sound that suits you the most! If you only play with that of gain you will be more in the field of crunch. With the saturation one, you will have a more frank and fat saturation.
When you combine the 2 you will get different colors and can achieve a fat fuzz.
The Emma Onomatopoeia is an interesting effect pedal for guitarists looking for a different sound.