For such type of measurements you should exactly know what you’re doing, to avoid breaking something.
The question alone tells me that’s not the case, so better don’t try.

ADI-2 Pro is a very good frontend for measurements in audio systems, up to very high ultrasonic frequencies.
The limits of ca. 0.1 Hz to 350 kHz would indeed cover a lot of the relevant range.
DC itself cannot be measured, as ADI-2 Pro’s inputs block it (lower limit).

But - ADI-2 probably (values are not published) lacks the level of overload related damage protection you find in dedicated measurement interfaces.
My Fluke instruments e.g. have protection against 1000 Volts overload in the 0.2 V range.

Unregulated PSU’s with nominal 12 V exceed 15 V all the time on idle.

So be warned!

@ MC: what’s the max. AC / DC voltage for each balanced leg, ground related, like XLR pin 1-2 or 1-3 ?