@ boucher, I don’t know about your Auralic Aries Femo with sBooster power supply. I’m sure they’re swell. At least to your ears. Anyway, prior to installing iFi, my source wasn’t inherently noisy or abnormally noisy. However, iFi along with the other tweaks I use throughout my audio rig just made everything that much more (incrementally) quieter and blacker, the results of which, I found to be....."Brilliant."
Happy listening.