Seen this? Very helpful starting guide, from here I managed to figure out the rest myself
http://analog.pen.io/
Thanks a lot, yes i ve seen it a long time ago already.
If its just important, save and right (?) to put v/ oct i might try out with some Y cables and adapter the rest.
Still I would prefer step by step for a4 to erebus and knowing its save and buy the right elektron cables.
V/oct is correct and safe for the erebus, yep. Just weird synths like the ms20 use hz/v. Just make sure you don’t patch outputs to outputs and all will be fine.
Thanks Anfim!
ok, i ll try it out someday.
Yes sorry i meant safe… coming from the saving projects topic 
with erebus i feel fine because there s anyway nothing to save,
on tanzbär nothing changes until i switch save, but there also its mostly jamming and no saving for me.
Just i love a4s sound plus sequencer so there i would like to save stuff.