It's Dave Fox's Aquavibe and is really excellent. You can dial in just about any tone sweep with the center control and it has the depth of throb like the vintage ones. Check out some of the other vid links for some Lester Polfus love too!
Thanx Dave B and yes the ole 100's do have that thang that makes the hair on the back stand up!LOL! Now Brian, you can't tell me that you couldn't hear the swishing of the vibe throughout that now could ya? Dave's box is really excellent and built like a brick shithouse so it will be on my board for eternity!