Well, at least I can say my new interface works, can`t say the same about the workbench HD, I tried a costume tunning and the the funniest thing happened, while I was tunning the G string in the software, the change was happening in the B string, and the G string became with a metalic sound, very bad...I was using an accoustic model(6 strings), can`t remember the specific model. The tunning was (1st string to 6th)-D A D D D B . I am using the last version of the variax firmware, it was the one that came with the guitar. Maybe I should try older firmwares :D