Robotic switch to control speaker turn an audio knob wireless.

I have yamaha two separate yamaha speakers that do not have a remote, turning them on and controlling the volume can only be done physically from the back. So far I managed to turn them on/off by connecting them to an extension cord and having a fingerbot pressing the main switch. My question is there any device that can be used to turn an audio knob similar to a fingerbot?

submitted by /u/mcjoggin
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