Volume level chain

Hi all,

Hope everyone is staying safe!

So here is my shelter in place question:

Are there best practices regarding volume level settings at each component?
Should volume be adjusted on one component and fixed at a certain level on the rest?


Given the following setups, does it matter which component is used for overall volume control?

Office setup:

    Laptop > Integrated > Speakers

    I leave the laptop volume at around 80% and adjust volume on the integrated.

Living room setup:

    Laptop > Temporary DAC (Fostex HPA8)  > Preamp > Amp > Speakers

    I leave the laptop volume at around 80%, preamp ~ 75% and adjust volume on the DAC.

I wasn't sure but figured it would be safe(?) to keep any fixed volume components at 80% or below.

Thanks!