Sure, but is the core in your living room? Can you see it?
And do you listen in any other rooms?
Headphones? Bedside? Office?
The reason I’m asking is just to get you guys to think about what your request means in a distributed architecture like Roon’s.
Just to illustrate, here are some observations from my place:
The Core is in a place where I never see it. And it is never turned off.
I listen in various rooms, including moving about and playing from an iPad or phone, out on the deck or on an exercise bike.
When I listen in some location, I have a control unit (e.g. iPad) and an endpoint (e.g. MicroRendu connected to a DAC connected to an amp). The control is not relevant here, an iPad is rarely turned off, it just shuts down the screen — I certainly would not want volume adjusted when I put the iPad down and it goes to sleep and I pick it up again. And sometimes I change control: I turn the music on with the phone in my pocket and later pick up an iPad for better reading of album covers, that changeover doesn’t mean anything.
How about the endpoint? I may turn off the amp but Roon doesn’t see that. I may turn off the DAC, Roon may see that through the MicroRendu, it may not. I never turn off the MicroRendu… So this depends. And volume control depends,
In my main listening space, the big rig (electronics and speakers) are turned off when not in use, and they can be set to a fixed startup volume. It communicates bidirectionally with Roon, so Roon will see the volume it starts on and Roon can control the volume. (As I recall, I don’t use this feature.) This would allow what you are asking for, but this level of integration is rare.