If you're looking at this, you more than likely have been Googling around to find the pros and cons of this "now-vintagey" (20ish year old) amp modeler. It works fine and, as you can see in the pics, It comes with a power supply.

This is on the list of Guitar World magazine's greatest guitar gear of the 21st century.

This is the conclusion of a review from 2003 Sound on Sound -

I don't think any modelling amplifier DI'd into a mixing console is a satisfactory replacement for the real thing in all circumstances, but Line 6 have most definitely narrowed the gap with their PodXT. The overall sound quality is improved, the dynamic response is more natural and the clean amp models are an order of magnitude more authentic than in the original Pod. On top of that, the effects section is far more serious and could easily replace additional rack effects and stomp boxes in the majority of applications.