Hi folks, I'm going to be playing at a bar this weekend and a band that played there a couple of weeks ago has warned us that the mics give us electric shocks. In the hope of avoiding this I have come here to ask for advice. I have a cheap Donner Active DI Box. It has a ground lift feature. I don't know if that helps or not. I'm pretty ignorant when it comes to electronics so any help would be great. Thanks.