It's not a bad build for the price, but it's simply not possible to use it as an EQ. As soon as you open the gain a little, this pedal starts to overdrive. It's a nice volume booster, considering you go for the drive effect, but it's a disaster to give a boost to the sound, without increasing the volume quite a lot. If you're looking for a drive with tone coloring and a volume boost, this could be a nice effect, however, what I bought was an EQ, to give just a little boost to a small frequency range, without increasing volume and it's simply not made for that.
Another thing I found is that the switch is of very, very poor quality. If you get this item for volume boost/drive, be prepared to replace the switch for a proper one, within a couple of days.