A little tip about sound routing.

[Moxica]

Under options/audio;
I send main sound (engine, rotors etc) to the speakers, and radio sounds to the VR headset. This way I have individual volume control for these.
(I happen to have an external sound interface with a physical volume knob, but even without it you'll have better control)

Edited October 4, 2022 by Moxica

[PLUTON]

Slt I have exactly the same thing and it's true that it's great

[M1Combat]

There's also a slider in DCS that controls helmet audio but I don't recall which one it is.