Distortion pedal, with in, out, Gain, Tone Level, classic ...
Clarification, I Cmatmods Brownie model. The pedal comes standard with other transistors inside, but that comes with the original.

UTILIZATION

After several tests, I opted for the transistors of the original BSIAB, that's why I put my opinion here. Usage is childish, the change of transistors as well.

SOUND QUALITY

HEuuuu, Hallucination!
I compared with a Jackhammer (OD mode), supposed to give her a Marshall. The grain of the JH is a successful, effective Marshallian, but next to this beast is the day and night.
Frankly I always thought that no pedal could sound like an amp, but that's the impression it leaves. Notes "live" when they are playing.
The tone changes depending on the level of gain. The more gain, the greater the bass and treble, the mids still has about the same.
It's basically a gain on the van Halen, the Marshall Peavey ...

OVERALL OPINION

All those who believe that this is not possible should try to forge in opinion. There are no lamps, but it looks like.
All those who like Marshall would love it!