honestly for dubstep you can just get the vec samples and do little effect magic to achieve good results but idk synthwave is such a mixed bag, so hard to find good samples
I agree. Old drum machines are super useful and are reflected in a lot of early synth-pop (thinking like Dare! by the Human League which uses the LM1 all over).
Here's an OD with most of the old drum machine samples I found the other day: link
I have started archiving websites I frequently visit that I think are on the verge of disappearing... didn't think it would happen this fast, but here we are