interesting comments so far.
Just to throw in some of my experiences into the mix.
1. I noticed the biggest change in sound from powering the Mytek DAC with conditioned power from a Isotek Aquarius (not exactly LPS but clean power), this had a bigger change than powering the Ultrarendu with conditioned power
2. Plugging in the Wyred4sound reclocker in-between the Ultrarendu & DAC had no effect whatsoever.
3. Tried the different modes in Ultrarendu - Roon sounds best, Spotify is pretty good, Apple airplay simulator sounded plain bad.
Before loaning the Ultrarendu & the Mytek DAC to me, my friend, the owner of these devices was using the Ultrarendu (minus the Mytek DAC) directly to his KEF LS50 Wireless's USB input, and it did not sound any good. The Mytek DAC, which he subsequently bought has transformed the sound.
Only conclusion i can draw, is that a good DAC makes a much bigger impact in sound quality than these renderers or cleaners
@panditji some food for thought, my mPre's USB input has galvanic isolation, but plugging in the Wyred4sound reclocker has obvious improvement in sound. Do consider the Uptone Regen or Recovery as an alternative buy to the Ultrarendu/SOTM, they are much cheaper & they do make an difference in sound.