Option to auto power on, off based on external power cable?

[mcandre]

I have a single surge suppressor that I want to use to instantly power on and off all of my instruments at once.

This works for most of my equipment, but the Volca Drum is stubborn. It won't power on unless I explicitly press and hold the Volca power button. And it won't power off unless I explicitly press and hold the Volca power button. Could there be a setting to follow the external 9V on/off state, so that we can manage multiple instruments faster?

I realize for some musicians the manual requirement has the potential to rescue a performance by automatically switching to battery reserves if the external 9V goes out. But I'm not sure that this is the case, and in any event I would prefer to be able to configure my Drum to ignore such risks, damn the consequences!