RE: " The standard AC power supply sounded just as good as the batteries "

This is not about discounting batteries or about denying your personal experience.
It is simply about how things work.

When I first heard about battery powered audio gear not for the sake of portability but for the sake of sound quality, I was impressed.
That is a good idea, no pollution form the mains, no rectifiers, just pure DC.
Later, and much to my surprise I learned that this source of pure DC makes some noise too.
I didn’t expected it.
In the Ogier article, the noise levels are quite high, probably due to the experimental setup.
In a more recent article, the noise level is much lower but simply not what I as a typical armchair engineer expected: no noise.

The Well Tempered Computer

https://www.facebook.com/notes/ifi-audio/why-a-usb-power-sup (Open in New Window)

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Follow Ups Full Thread

Topic - Jitter and power supply quality - beppe61 06:13:01 04/09/14 (14)

RE: Jitter and power supply quality - John Elison 14:24:01 04/09/14 (13)

First try ... - beppe61 03:26:26 04/10/14 (0)

" inexpensive sealed lead-acid battery " - beppe61 01:13:27 04/10/14 (0)

RE: Jitter and power supply quality - Bob_C 21:46:54 04/09/14 (0)

RE: Jitter and power supply quality - Tony Lauck 17:05:41 04/09/14 (9)

RE: Jitter and power supply quality - DeeCee 17:26:17 04/09/14 (8)

RE: Jitter and power supply quality - John Elison 18:35:05 04/09/14 (7)

Interesting that you mention the Alchemy DDE v3.0 - 1973shovel 05:09:45 04/12/14 (0)

" The standard AC power supply sounded just as good as the batteries " - beppe61 05:10:10 04/10/14 (5)

RE: " The standard AC power supply sounded just as good as the batteries " - Roseval 10:51:05 04/10/14 (4)

Good to konw and cuts through the 'battery' fantasy of 'perfect power supply' rather well. nt - Elizabeth 15:17:28 04/12/14 (0)

Thanks a lot for the hint ! - beppe61 22:13:45 04/11/14 (0)

RE: " The standard AC power supply sounded just as good as the batteries " - John Elison 11:37:13 04/10/14 (1)

RE: " The standard AC power supply sounded just as good as the batteries " - Roseval 12:02:04 04/10/14 (0)

Follow Ups

RE: " The standard AC power supply sounded just as good as the batteries " - Roseval 12:02:04 04/10/14 (0)

RE: " The standard AC power supply sounded just as good as the batteries "

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