Wyoming/Piper: How can I mute / disable audio output?

I wish to use Wyoming without having Piper to play audio, the reason for this is pets which will attack the speakers when they make noise. I’m not sure how well the lack of feedback will work yet, but I wish to try. So far I’ve attempted to disable Piper in the UI which results in the entire module failing. Is it possible to disable audio on the ESP’s (I’m currently using Atom Echos)?

How can I disable audio playback? Currently I’ve configured Wyoming to use Piper but I can switch to another audio output if need be.