I have not heard the Omega Mikro, but I do own the Fideliums SC's and can tell you the Sternklang Interconnects are excellent pairing at least in my system. They are copper ribbon style...incredible detail retrieval with great sound overall. They are fragile, so don't play tug of war with them :).
https://en.sternklang.xyz/products/ephemera/index.html
Contact Gestalt Audio to see if you can try a pair.