I needed a stamp so I made one.
Dub Fx (does anyone actually know how to spell his name right?) is some sort of street musician, touring the world with a BOSS RC-50 Loopstation, a BOSS GT-10B Effects Processor and his Microphone.
What he does is a combination of "Beatboxing" and "Live Looping".
If you want to find out more, visit dubfx.net