Works Wonderfully, great for SM7B and SM58
I have a small Mackie FXPro 8v2 Mixer. It works very well (recognized in Audacity under Linux right away). But it has limited gain, and with dynamic microphones like the Shure SM58 or the SM7B you have to basically max the gain and even then it's not so great. Buy an extra pair of short XLR cables and put this inline with your mics and boom, instant very clean gain. Really works well.