Has anyone used this thing.??

http://www.music123.com/ART-Tube-MP-i37170.music
I posted a thread on here about amp clipping, and someone suggested that I look into an ART Tube MP . Has anybody used one of these or a similair vocal pre amp in a live situation or for recording bass? From the research I did, many people say that this thing makes a bass sound great..does anyone have a similar opinion? I was gonna rent one from the local music store, but none are available...conveniently they have 2 for purchase.