So guys I have done my A/B comparison with the Elite and really don't know what to make of my findings yet.
I have set Wandla to automatically startup after standby, so I had about 5-6s delay between each switch.
At first I started my comparison with my Feliks Audio Euforia fitted with Svetlana 6AS7G Power Tubes and Fivre 6SN7 Driver tubes.
I thought that I could sense a little more impact with the Elite PSU, but as I switched back I could not confirm this without any reasonable doubt.
So it was most likely placebo.
I could not make out any differences in noise or smoothness in the sound, which I expected as the Euforia of course, is a tube amp that already colors the sound and is not silent when compared to solid-state amps.
But then I had an idea: the V200 has some jumper switches which basically allow it to run without any sort of noise rejection on the inputs.
I already tried this once in the past and didn't run it like that for long, because then I could hear the coil whine my graphics card makes while under load, e.g., in PC games. It disappears when I disconnect the USB connection from Wandla, which tells me Wandlas USB input is not 100% perfect, but that's another story. With the jumper set to lift, this issue is resolved, as then the V200 has a resistor engaged afaik.
Well, one thing I found with this somewhat unrealistic experiment is: when I crank the V200 with no filters engaged and plug in the stock PSU into Wandla, it makes a clearly audible whining sound during startup, which settles after a second or two. With the iFi, the startup is completely silent. So it seems the iFi PSU is definitely less noisy than the stock PSU and this seems to affect the output signal in a very minor way.
But even though I now know for a fact that the stock PSU makes more noise, I really have trouble justifying the Elite. In normal music listening, I really cannot tell an obvious difference, even when running the V200 as mentioned. With tubes, there is zero difference, as they are far too noisy to pick this up.
Maybe a Susvara would be able to resolve this better with music, but with my ZMF it's just not worth it IMHO...
I think I will take some more time to listen to some more tracks with the Elite and then decide if I want to keep it.
Edit: Just noticed: The Elite itselve makes a chirping sound when Wandla is in standby