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PSU1 Enigma Micro-Signal Power Supply
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Ash View Drop Down
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Joined: 18 Mar 2013
Location: Dorset
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Points: 4360 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ash Quote  Post ReplyReply Direct Link To This Post Posted: 20 Oct 2021 at 1:36pm
Thanks Graham.

When I order the Enigma, I will ask for a barrel power cable so I can swap it onto my stock PSU1 for use with things like a Solo. A potential buyer will likely be seeking a power supply upgrade for a headphone amp.
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BAK View Drop Down
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Points: 1831 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BAK Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2025 at 8:14pm

morris_minor Posted: 28 Jun 2018


Originally posted by morris_minor morris_minor wrote:

The effect of the Enigma is to bring the sound even more into focus - not making it "sharper", but just more defined. (Think Blu-Ray video versus DVD). Dynamics are also improved. This was most notable with Pink Floyd's "Division Bell". I'd just completed a video of a few tracks from this when the Enigma arrived so I re-ripped the audio and compared the waveforms. Sure enough, with exactly the same level into the ADC, the loud peaks were obviously louder visually, and sonically this translated into not only a more exciting sound but one where the inner detail within those peaks was more noticeable, more tangible.


The Enigma PSU1 has been designed to give more efficiency in how the “micro-currents” flow to and from the power source at all frequencies concerned. It is not the “power consumed efficiency” this is improving, this is focussed on the “micro-currents” being “free-ed” to flow the best they can to and from the power source.

The details in audio signals are at all voltage levels in a dynamic range of over 100dB...

at MC levels of 0.2mv (0.0002v) @1kHz,

that includes a range of 100nv (0.0000001v) to 10.0mv (0.010v).


Note: Gain required in RIAA with 0.2mv @ 1.0kHz reference,

10.0mv = 0.2mv + 20dB @20Hz plus 14dB headroom @20Hz

20dB is x10 and 14dB is x5 

20dB + 14dB = 10 x 5 = x50

so, (0.2mv @1kHz ref.) x (50 gain @ 20Hz) = 10.0mv


Now, 100dB is x100,000 or x1/100,000...

10.0mv / 100,000 = .0001mv = 0.0000001v.


0.0000001v = 100nanovolts = 0.1microvolts


Any signal < 10.0microvolts is in the noise voltage level range and is very tricky to maintain signal integrity without outside interference. So, the more efficient the power is supplied to support the micro-signals' current paths, the clearer the musical details will be apparent to the end listener.

 All of Graham's parts' selections have been selected for this purpose.



Edited by BAK - 29 Mar 2025 at 4:12pm
Bruce
AT-14SA, Pickering XV-15, Hana EL, Technics SL-1600MK2, Lautus, Majestic DAC, Technics SH-8055 spectrum analyzer, Eminence Beta8A custom cabs; Proprius & Reflex M or C, Enjoy Life your way!
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