4 knobs, in case mtal trs solid power supply between a 'type 9V DC classic, a trap door under the pedals to 9V. Sounds tough, to inspire confidence in any case.

UTILIZATION

Everything is super intuitive, no need to book.

Gain and zero-level background: boost
Level and zero-gain background: crunchy overdrive at max

I have not found the buttons super low and high efficient single knob might be sufficient for the pedals (one tone knob, for example)

SOUND QUALITY

In my memories, pdaliers zoom sounded cold and hyper mtallique and I went on a priori ngatif really. Frankly, I have AIM plutt sound is warm and the texture of the pedals is particularly enjoyable I t super surprised.
I tried many overdrive: plexitone (Carl Martin), TS-9 (Ibanez), OD-1 (Boss), Bad Monkey (Digitech), Distortion + (MXR) and so many others, but this p dale matches my registry prdilection: blues / rock 70's.

OVERALL OPINION

I think this is super versatile pedals in its register, for against the sound I like. It's crunch, has recalled immediately the brown sound is hot, it's rocky.
Brief occas 40 euros' worth a compar others are cold and are desperately short of grain. I do not know why it is not better known.