Is the Andis GTX T-Outliner good for fades?

Yes. The T-blade is made for close outlining and edging, which suits fades and lineups. It is less suited to bulk hair removal, where a clipper with guards works better.

Does it run on a battery?

No. It is a corded trimmer, so it needs a nearby outlet. That gives steady power but limits where you can use it.

What cutting lengths does it cover?

It cuts from about 1.5 mm to 4 mm. That range is for close detailing, not for longer beard or hair lengths.

Can I use it on wet hair?

It is listed as wet and dry, but most owners use it dry for outlining. Wipe and oil the blade after use to keep it cutting cleanly.

How does it compare with the classic Andis T-Outliner?

The GTX version is the newer T-blade model with the same close-cutting focus. Choose it for outlining; choose a clipper if you need guards and longer lengths.