Quote:
Originally Posted by Puma Cat
Actually, it can be a concern; it certainly bears investigating, specifically with respect to high-source impedance leakage current.
So, my question for EvaAnna Manley, which I may write to her about is....do these SMPS output high-source impedance leakage current?
High-source impedance leakage current is to known travel down almost all sorts of cables and specifically adds additional noise on the ground plane of digital signals, which causes increased threshold jitter, which is audible.
Here's the problem with detecting High-source impedance leakage current: it was only discovered in Oct. 2017, and...you have to build very specialized test equipment even to detect it.
The question is: do these SMPS designed by Bruno output these leakage currents?
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Why don’t you ask Bruno Putzeys directly...it shouldn’t be too hard to reach him through linkedin or Purifi. He is very approachable. Bart and I have had the good fortune of having spent the better part of a day with him...be prepared to have your brain melted though [emoji854]
I remember talking about power supplies with him...to summarise...a linear power supply, by its very nature, has it own set of problems. A well designed SMPS can certainly outperform a LPS.
The whole LPS vs SMPS thing is more something that lives in the minds of audiophiles, mostly fueled by persistent misinformation or lack of knowledge. I cannot speak for Bruno, but it was obvious he just goes for the best solution. Being the gentleman that he is, he politely sidesteps audiophile mythology with a witty or astute comment or observation...or he tackles it head on, like most recently the whole negative feedback thing.
IMHO...I think this a great move by Manley...bravo.