Correct. It's an always on pass through from the rca inputs (not the xlr feed). Not volume controlled.
@TechEnthusiast your problem is you think you need power that in reality you almost certainly don't. But you're not asking the right questions here. So tell us what hp you currently own, what's the most ludicrously zany spec hp you might ever get and what kind of eq / digital attenuation do you typically use. You have the e30 dac, yes? do you use it at full output or variable output?
Edit OK you have the Sundara? And you maxed the L30 in high gain with them? Which must either have been incredibly loud or you have some digital attenuation in your signal chain. You mentioned in one post about adjusting volume settings at source for the L30? Please explain. You mean the windows volume slider? And what about if you have your source player /Windows at 100%
And you've got or had the L30, zen can and monolith 778 (the all in one)? I think you are expecting magic from a device that's very simple. I'd be amazed if you blind tested those 3, level matched if you could tell the difference.