I have a Auxdiobox USB, Studio 3 and have used it successfully in the past. My problem lately is not getting any signal out of the main outputs. I am outputting the outs to a Behringger Powered speaker. The speaker works fine with other audio sources, I have my "main" knob turned up & the mix to playback, and the powered speaker is turned up. I have tried different cables to no avail also. I am hearing audio fine using headphones through the phones output. Only the main outputs are affected with no volume. This probably means my interface is bad, as all other functions work fine? This is on a Windows 10 laptop with the latest Presonus driver.