- they are still THE workhorses of loopology. I have (4) 7.6's, (2) 4000's and (1) 8000 and think they're great! Add a few FX-17 footpedals to control the VCO's and you've got a serious mayhem factory. Best of all, they can still be found for cheap on eB*y and elsewhere. eB*y is quite a nasty four letter word.