To supply a 48 Volt or 2 XLR microphone connections static.
I am using for over a year to buy ocaz.
it is forgotten, so he's his job.
j before I use feeds included in the mixers (Mackie 12 VLZ) which worked perfectly well.
I would do this choice knowing that the preamp which I wanted to plug n was no phantom power and that he needed a quality food to feed a mic AKG C414 TL2 (perfect match).
I recommend it, c is the pro stuff, upscale.