This pedal after what I understand, after the colaboration between mxr custom audio! (The guy too insightful ...)
So it's not numrique, preamp or the lamp has ...

UTILIZATION

It is easy to use hyper, two switches, four knobs:
A boost-
_a volume put out
One-tone
-Gain

SOUND QUALITY

I tried it on a fender Hotroad (therefore light) and I expect the use with my vox ac30cc2.
One word to say "awesome" the efficiency boost is a monster from -20 to +20 dB, as effective on clean, the crunch that big sound ...
And when you engage the overdrive, it's the Star Wars! ca from all over the place while remaining very precise!
Playing with the knob "gain" can be obtained from any crunch beauty ... it's fabulous!

OVERALL OPINION

I've just tried the day, I set out to test a multitude of pedals to my Vox AC30 and it turns out that this is the first and only test I have! I fell in love and I immediately ordered the papa noel! It sounds serious but leaving the grain of the amp .... if I tell you one thing, go test it is huge!
taste it, you'll love it ...
Congratulations and well done mxr custom audio
I have around 10! and besides, she has a mouth and when it is in the hands we feel that it's tough!