Awesome Drum Synth, was waiting for this forever. Thank you for fixing the filter toggle. There's another very minor bug where when you type a decimal into one of the parameters of the oscillators, like Tone or Overtones, it gets rounded up or down to the nearest whole number. In Overtones, you have to exit and re-enter the parameters window for the number you entered to appear correctly. Parameters in Master cannot be edited. just a minor bug, thanks for fixing the big one. Great synth app!