Can I control the knobs of Filtatron with my MIDI controller? Logan April 13, 2018 20:53 Yes, go to the About panel and press the MIDI button in the top right corner. Related articles I want to use Filtatron to process external audio, but I can’t hear anything. Having trouble? Contact Us. chat tech supportapp supportgeneral support 828-251-0090 Comments 0 comments Article is closed for comments.