I recently changed the internal wires (which is like 20awg ?) of the Nenuphars with Vhaudio. I am using KLE banana plugs on the speaker end but after break-in the sound is just so much better and fuller. My rest of the system produces very detailed and lively sound (due to Lampizator DAC) and hence some recordings that has stridency or hard edges present has mellowed down without loosing anything. All in all, the upgrade proved every bit worthwhile. While the VHAudio upgraded wire with ofc copper conductor sounds as good as it does, I am tempted now to upgrade to even better wire, maybe silver. It looks like the internal wire might be the greatest weak point of this speaker depending on the rest of the system.
@ricevs I would love to try some of those purifiers….