Certainly, like analog interconnects, network cabling, power supplies have an influence.
I just use a Netgear GS105 at the music-server direct to an EtherRegen (MK1). The ER is powered from a Lumin U1 PSU, the GS105 from a Chinese 5A 12V linear supply. By adding SilentPower lan ipurifier pro and knock off Odin CAT8 cables, that harshness seemed to be tamed. Not a big deal, but enough to keep the gear in place.