Sorry not to answer to this, But I’d like to bring some info on this older post:
jsharpphoto wrote:The EHX 8-Step can only be a modulation source, because as far as I know, it doesn't send gate CV. It's just sending a generic voltage that's fine for things like frequency cutoff, but not consistent enough for pitch, and you'd have to get a gate signal from something else.
The EHX 8SP features a sync mode that allows to go through the steps thanks to a gate signal input. This means that you can use a common gate generator as envelope trigger AND 8SP clock.
Plus the 8SP circuit board allows a mod for gate output. This can be easily found on the web.
Now it's true that it is a bit rough for pitch modulation, but as it can store presets, well, it can do the job.