See description above is completely accurate
As for the doc, it's a good zero point but given the difficulty settings, you can largely do without
The plastic housing is not great either

UTILIZATION

The use could not be more simple, personal, I use it at home with a custom Samick Valley Art whose microphones have been completely replaced (by the Seymour Duncan) with a tube preamp, I do not advise the using live, it is made to repeat or emergencies than anything else

SOUND QUALITY

Personally, I tested it with a Washburn N2 with a Start plugged us live on my sound system and a headphone preamp,
at first I was afraid she does not release too many blows and it's going, it's still correct even if the sound is very cold, which is to my taste the difference with the equivalent boss
they are compared both with a Start and a Washburn us and there is no picture

OVERALL OPINION

At 23 euros the pedal, it's still a good value / price against the huge missing is the battery compartment which is really badly done
there is much difference between the behringer boss and the simulator between the Variax acoustic and boss