I just bought a Qtron about 3 months ago. I have used it only a handfull of times and it stopped functioning properly. It still allows for my guitar signal to come through but its acting as if there is a mix level that is turned almost all the way off. So basically I get a lot of guitar signal, and little or no filter depending on how I have the knobs. Is there something I can do to fix it, or how do I send it back for warranty work?

-Brandon