For those afraid of poking around your instruments finding glitches, here is another step by step tut from circuit-bent.net. This one is not a data line cutting mod, instead its a patch bay with some RCA jacks. Sound samples and more images can be located on this confusing page. As a side note the VSS-30 I believe was meant to be the competitor of the SK-1 with many additional features. It also seems to be more expensive and even harder to find.