I am also selling this on other sites, so please comment before purchasing. Operation has been confirmed. All functions, including the microphone, work properly. Canon output has also been confirmed. No scratchy noise. Sound can be output from EFF when Effect is on. I believe this is the same model mixer that DJ KIYO used. Please refer to the images for the condition of the product. Please refrain from purchasing if you are sensitive to imperfections. Returns are not accepted to prevent product substitution.