The JoNik4ALEPH converter revives ALEPH's original file formats inside modern infrastructure: it reads the 1990s EPIO files directly and writes them as EDM4hep for Key4hep. Here it is compared with l2e, the production EDM4hep conversion, on the same ALEPH MINI-DST events. Each plot shows both conversions, with the ratio JoNik / l2e underneath.