New Manley Switching Power Supplies

[Steady339]

Interesting video on the new superior sounding Manley switching power supplies:
https://youtu.be/tdYY_hoHj80

[Jem666]

Originally Posted by Steady339

Interesting video on the new superior sounding Manley switching power supplies:
https://youtu.be/tdYY_hoHj80

Thx for posting

He he...Bruno Putzeys...why am I not surprised.

[PHC1]

A properly designed switching power supply is not a concern. There are some class D amplifiers out there that are excellent performers and a class D in essence is one big switching power supply

[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?

[PHC1]

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?

Sounds like Manley is using these in all their professional gear and recording mikes. I would think someone in the industry would hear it and question it but perhaps not.

[Jem666]

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?

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

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.

[bart]

'Our' Bruno is ubiquitous!

[GeAllan70]

[Steady339]

Speaking of Bruno Putzey, has anyone heard the unique monitor speakers he designed, the Kii Audio 3 speakers?

[Antonmb]

I’m sure I’ve mentioned this in another thread, but there aren’t many Linnies here so I’m compelled to repeat it. Linn has been using switch mode power supplies successfully for many years. It’s in their Klimax streamer/dac, which doesn’t get as much recognition in “audiophile” circles but competes on an equal footing with the likes of dCS, Esoteric, etc. Just like the debate of vinyl vs digital, it’s not the specific technology, SMPS vs LPS, it’s in the implementation. If it’s Bruno’s implementation, I’m guessing it sounds fine.