I’ll be getting another iFi power supply soon… because yes, it does work as advertised. The difference was just so small to notice when the DAC power supply was causing the most noise to begin with. In fact, I’d say that what’s left of the noise in my system is probably coming from the TUBE03 power supply itself. That’s when the difference became noticeable. I then swapped it over to my FX AUDIO DAC MKII that’s in the same chain using the power supply that came with it. I first connected the iFi power supply to my FX AUDIO TUBE03 pre-amp and noticed very little if any difference in background noise compared to the aftermarket 12V 3A wall wort I currently have. I’ve spent a little time and money upgrading the internals of each one, so all that was really left to do was try an upgraded “silent” power supply to squeeze every last drop of clarity there was to get. I originally bought the 12V 1.8A unit because it was so highly recommended by those who are using tube pre-amps and DACs with cheap power supplies (I have several).
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