Oktava ML-19 Ribbon Microphone Repair $180.00Read more This end address, directional ribbon mic has pretty good high frequency response for a ribbon microphone. In for repair with a low output and missing low frequency response was this Soviet era Oktava ML-19 ribbon mic. On first open, a very interesting baffle plate is seen, providing the ribbon with some extra protection from wind blasts, and some other functionality. Revealing the ribbon showed not only some twist to the ribbon, but a significant bow, which would account for the lost output, and limited frequency response. Share this:ShareTweetEmail