Dekoni’s product page compatibility list explicitly names HiFiMAN Edition X 1&2 and Edition X V2, supporting the listed Dekoni pad family’s compatibility with the original Edition X. The page is for a separate Dekoni product listing from the EPZ-HIFIMAN variant listing, so it does not by itself confirm that each EPZ variant/code (EPZ-HIFIMAN-SK, -FNSK, -HYB, -ELVL) fits the original Edition X.