Key command to open Spectrometer?

Really enjoying W9’s streamlined interface and new look, but I was wondering if there’s a way to open the Spectrometer window (in float mode) using a key command? All I can see in the prefs are key options for commands inside the window, rather than one for invoking the window itself. Can anyone help, please?

Oh I’m an idiot, just saw that it’s it a different section – audio meters.

Right, I’ve set a key to open it, but it doesn’t toggle between open and closing, sadly. Still, it’s something.

I also wish I could toggle between opening and closing the bit-depth meter but as you say, the shortcut only opens it.

The global master section is the only thing I can use the same key command to toggle to show or hide which is great.