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I consider too buy one. But also consider too concentrate more on sinking/filtering

Hi Rick,

To me it’s totally unclear what a digital audio circuit exactly ‘needs’ from a PSU. I also don’t know what kind of digital audio circuits designs are more sensitive than others, too the quality of the power that is feeding them.

As also mentioned by other forum members: swithing PSU’s can be used with great success in digital audio equipment. For instance: my Lavry Black DA10 DAC uses a switching PSU inside, but it’s considered to be among the best sounding mid-level-quality DAC’s. May the digital circuit designs of the Lavry are not so sensitive for the power quality that is feeding them. Or: the switching PSU design is optimized for feeding digital audio circuits in the Lavry. I don’t know. But I guess: probably both.

I also don’t know / have (strong) reservations on ‘just’ copying what is ‘good practice’ in the analogue audio domain too the digital audio domain, assuming that the same practice will also be ‘good practice’ in the digital domain. Some times it is, because essentially all ‘digital’ electronics work analogue too. But also a whole set of different rules apply when transporting and processing block pulses at mega Hertz speeds instead of processing ‘old fashion’ sine waves. Inmate Ryelands sometimes stresses this by pointing at Ivor Catt’s (a.o.) book Digital Hardware Design. http://www.ivorcatt.org/digital-hardware-design.htm#contents. I think Ryelands stresses a very good point here.

So that’s what do I do. I just wonder around in ‘the land of PSU improvements’ for my cMP setup while trying to avoid getting lost. I read how other inmates try too improve the sound of there cMP setup through optimizing the power supply. When it works (other inmates report sound quality improvements too) I try to copy that improvement. But only when it’s not too complicated or difficult because my knowledge and skills are (very) limited in this matter.

So the common sense around here on PSU improvements is to apply a combination of:
- Using a PSU that can deliver currents that vastly vary while keeping Voltage rock steady.
- avoid noisy PSU’s by using quit (mostly linear) ones and or battery’s
- avoid or remove noisy components
- ‘sink’ or ‘filter’ noise generated by noisy components on MoBo, processor, sphericals, etc, ect (too a REAL earth or to GND ?)
- using separate power supply’s in ‘dirty’ and ‘clean’ sections.
But I suspect that the ‘dirt’ from the dirty sections somehow travels around and still manage to reach the clean sections through various ways.

As a hobbyist with limited knowledge and skills I concentrate on the use of (pre-build) linear PSU’s and the sinking / filtering of ‘noise’.
Since using linear PSU’s is relatively easy, most inmates concentrate on using / building linear PSU’s. Unfortunately I don’t read so much on ‘sinking’ or ‘filtering’ noise that ‘dirty’ components are throwing into the power supply lines.

Although I sometimes post long posts (like this one) I’m not the kind of guy who likes lengthy exchanges on ‘philosophically’ or ‘scientifically’ arguments if something might work or not. My motto is: if you think (after good, sound and thoughtful consideration) something might work: than just try it.

So yes I’m considering too buy one. Gstew already provided me with a lots of information on the subject and also some guidance on which model too choose. But he also provided so much more other info and alternatives, that I first have too think and read about that.

Meanwhile I’m going too ask FMAK how he is doing his LF and HF filtering. It seems he belongs to the few inmates who not only concentrate on providing clean power but also on keeping it clean (filtering). I’m very interested in how he does it.

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