I process external drum machines through eurorack using two of these to boost the individual outs: https://www.modulargrid.net/e/blue-lantern-modules-booster-array They are cheap and work wonderfully for that purpose.
I also use a lot of other stuff to process the sounds, but the Worng Soundstage is a cool option for stereo mixing.
Have fun and good luck.
-- farkas
Nice! Thank you I will be watching those. Now sold out of course.. Also probably more expensive for Europeans.. But I will check out the technology and try to find something similar that is locally available. =)