Is there no option for you to switch this fx chain on/off by creating some sort of bypass in your audio path? It might be easier to control just this 1 'switch' via midi iso all of your fx at once. Grtz Thijs On 30 Nov 2011 05:27, "Jonathan E. Brickman" &lt;jeb(a)ponderworthy.com&gt; wrote: Greetings. I have a need to turn on/off multiple software audio filters (reverb, flange, chorus, et al.) using either computer keystrokes or MIDI control signals. Anyone have a way? I've looked at GUI automation of calfjackhost instances and several other things, but have not found anything likely to work very well. -- Jonathan E. Brickman *Ponderworthy Music* <http://ponderworthy.com> 805 SW Jewell Ave Topeka KS 66606-1610 jeb(a)ponderworthy.com _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-user