Audio PC

@milpai

I appears to me that the Streacom ST-ZF240 ZeroFlex 240W Passive PSU is a switching power supply. It is fanless but from what I’ve gleaned from the specs of the high end streamers is that they all use linear power supplies to reduce electrical noise.

In one of the reviews of the PINK FAUN STREAMER 2.16X

https://www.monoandstereo.com/2019/12/pink-faun-streamer-216x-review.html

“For example, the ATX to the motherboard contains 5 different voltage levels all having their own linear regulation. Pink Faun has designed a full linear PSU and makes no use of any DC to ATX converter. “

That’s a little overkill for my skill level but there is an ATX converter that separates a 12V input 160 Watt to the ATX voltage adapter.

https://www.amazon.com/dp/B005TWE6B8/?coliid=I3GUHXMM4WM2Z&colid=19SGDZ5EOZ98N&psc=1&ref_=lv_ov_lig_dp_ita large 12V linear PS should provide enough to power it.

This limits me to MicroITX but I’m hoping this configuration will work for my purpose as I only need one PCIe slot. I still researching power requirements but hopefully the ASRock Z690M-ITX/ax board will fit the bill. I’m looking for I2S only and there is a Pink Faun I2S board (they also make a USB board). It appears to have a DC input. I haven’t contacted them yet but if I can power it with a separate power supply I should be OK with only 160 Watts but will need two power supplies.

In the middle of writing this I did find a TeraDack ATX linear power supply.  For around $1600 820 Watts of linear ATX power 

https://www.aliexpress.com/item/2255800625006296.html?spm=a2g0o.seodetail.topbuy.1.461c1e59rW5ciU

I’ve built a lot of computers in my day but that was years ago and not only has a lot changed, this is a very different beast. Making sure all the components will fit with the correct orientation in a fanless case that has a PCIe adapter location. (Streacom st-fc8s-alpha ???) A low power CPU that won’t overheat with only 87 Watts of cooling. I probably won’t know if all this is going to work until I build it and I’m sure I missed something but it’s still just a motherboard, power supply, ram, hard disk storage and OS.

If there is anybody out there that has some tips or pointers or additional information PLEASE let me know.

The Raspberry PI solution sure seems a lot more strait forward and while I’ve used Volumio I’ve never used LMS . A I2S hat with a linear power supply that would allow me to play Qobuz and my stored music files from my listening chair may be all I need. I’m using USB now and at times it sounds pretty good but as you know it can always be better.

@danager ,

You are absolutely right. It is indeed a switching power supply. My goal for the current build is to "build my first desktop". I have never done this before. But after 2 days of searching the internet, I am almost ready once the parts come in and I have to order a few more.

As for LSP, that will be in the future. If you need a really good LPS, then check out the following link:

https://www.acopian.com/single-l-goldbox-m.html

These LPS are made in the US and have "ripple: of 0.25 to 1.5mV, which I understand is fantastic.

@lalitk ,

Thanks,. I do have some USB PCIe cards in mind and JCAT is one of them. But that will happen later. Current focus is to build a desktop because the laptop is getting old and I cannot do DSD 512 in the Foobar because of processing capability of that old laptop.

@milpai

Sounds good. I can’t help but feeling excited about your project, please keep us updated on your progress. Good luck!

Thanks @lalitk ,

But tonight I got a message that the compact power supply I ordered is cancelled because it became "out of stock". I was initially disappointed a bit. But then I thought - things happen for good. So now I will look to use a Linear Power Supply to power up the PC. Also will go with a ATX mothernoard instead of micro-ATX motherboard. The goal is to use a Nano160 PSU (DC-DC) and power it with a Linear Power Supply. So the build is going to take some time to start.