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Nenon

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  1. I have two things to report: 1. For those of you following my 'Building a DIY Music Server' thread, you may know that I switched the AsROCK Z390 Phantom Gaming-ITX/ac to the ASUS Z390-I ROG Strix Gaming Intel LGA 1151 mini ITX motherboard. I compared the two, and I liked the ASUS better. It goes on the top of my recommendation list for Intel Core ITX motherboard. 2. The Intel Core i9-9900K CPU does not support ECC RAM. Some people here have built their server with AMD Ryzen CPU mainly because of that. However, while reading the AsROCK motherboard specs, I noticed the following under memory: - Supports ECC UDIMM memory modules (operate in non-ECC mode) I found that quite interesting. Having some Apacer ECC RAM on hand, I decided to try if the ECC would work on the ASUS motherboard. It did! I am running the ASUS motherboard with ECC RAM (operating in non-ECC mode). And it sounds very good. I will do more back and forth comparisons with ECC vs. non-ECC (both from Apacer), but I really like what I am hearing.
  2. This is hard to answer or even give you any recommendation. I have only used the SBooster and HDPlex from your set of power supplies at very early stages of experimenting with music servers. I don't have them anymore and would not consider them in my system again. I have not tried the SR4 or the MPAudio. Instead of trying to map a power supply to component, let me try tell you what I think in general. There are two factors - power and quality. Typically the best quality power supplies cannot provide a lot of power. If 'quality' was the only factor, it would have been a really easy recommendation: You put the best quality power supply you have on the USB. The second best goes to the CPU. The third best goes to the motherboard. If 'power' was the only factor, it would have been a really easy recommendation too: You put the most powerful power supply you have on the CPU. The second most powerful goes to the motherboard. The third most powerful goes to the USB. The problem is when you have to balance between those two factors and introduce a dozen other factors - then it gets really complex. You would have to experiment and see what works best. A good starting point for those experiments would be to: Put the most powerful power supply on the CPU. From the remaining power supplies, pick the best quality one and put it on the USB. From the remaining power supplies, try the best quality power supply on the motherboard; but you may also try the most powerful, or something in between. Good luck with the tests and let us know what works best. Oh, and one more note - I am increasingly starting to think that building a computer with multiple rails of the same power supply and wire accomplishes more natural sound overall. Look at my Building a DIY Music Server thread for example of what I mean by that.
  3. The server powered up just fine. I had some issues with a defective AsRock motherboard, which I replaced, but I ended up switching to the ASUS as mentioned in one of my previous posts. The ASUS is rock solid. I like it a lot. I did some quick BIOS tweaks for now but will go back there later to dive a little deeper. Basically I disabled everything that is not necessary - Wifi, Bluetooth, audio card, onboard NIC, LED lighting, etc. etc. I made sure the memory is running at 2666, made some tweaks of the CPU performance, disabled fan monitoring and so on. The 32 GB Optane card is mounted on the M.2 slot on the bottom of the motherboard. The BIOS saw it without a problem. I will be using it for the OS later. I booted Euphony from a USB drive. All good! It started playing right away. The CPU temperatures are not bad after playing for several hours: I did not want to transfer the Euphony license yet as it is used somewhere else currently. Plus I needed to contact Euphony support for that. Euphony does not let you install the OS on a hard drive (or Optane card in my case) if you don't have a license. But there is a trick I used. I have described it here: I booted to Audio Linux since I had this USB handy and needed root access. Downloaded the Euphony image and installed it on the Optane card per the instructions from the quoted post above. Removed the USB, rebooted, and all good - Euphony booted from the Optane card. The things I configure in Euphony that make an audible sound quality difference are: Disable the software volume control on the DAC Buffer before play = 100% Use cache Enable ramroot I will go back later and configure CPU isolation, but not now… I configured Qobuz and access to my NAS-based music library and let it play. This computer would have a long burn-in process and will continue to improve in the next 3 months. But I am not done with it. Some finishing touches and more pictures next. Stay tuned.
  4. If the CPU draws 1.5A, I would feed it with a LPS that can provide 8A, or it least 6A. That from my experience sounds a lot better. It's what other people have reported too. Oversizing the power supply feeding the CPU makes a difference. Don't ask my why... I have a theory but not worth getting into it.
  5. Yes, the Asus is really good. I had good experience with the AMD ASUS ROG. This one is arguably even better. The Apacer RAM is non-ECC. The exact model number is D11.2318FS.004. I just added that to my first post with specs. On this topic I have something interesting to report - this motherboard works with ECC RAM, but it uses it as Non-ECC. Oh, well... just when I thought I was done with RAM comparisons...
  6. Time to make some cables. I use Mundorf 15.5AWG silver/gold wire in organic cotton sleeves, soldered by WBT silver solder, and shielded with JSSG360. More about these cables in the following posts: Here is how the cables look inside: I need 4 umbilical cords for this build. - The regulators for the PinkFaun USB bridge with ultraOCXO clocks are inside the power supply chassis. That one would need a GX16-2 to DC2.5 connector. - The other 3 umbilical cords are for connecting the two chassis (for the 3.3VDC, 5VDC, and 12VDC ATX connector). The Voltages feeding the 3.3V and 5V regulators are the same. So it is safe to use the same connectors and cables (GX16-3 pin in this case). They are slightly different, because one of these rails is 5A, the other is 1.5A. But nothing would explode if you mistakenly swap them. However, as it can be seen on the picture below, the 1 foot cables are short enough, and it would be difficult to connect them wrong... swapping out #2 and #3 from the picture below would require some creativity as one of the cables would be almost impossible to reach. The fourth cable is a GX16-4 pin. That's a higher voltage, and it's important to make it impossible to plug it in the wrong hole. Hence, the 4-pin connector. There is a fifth cable in the picture - the long one - that is going to an external Sean Jacobs LPS and will power the CPU/EPS. I like that, because we not only have a dedicated rail for the CPU but also a dedicated toroidal transformer. That provides an extra level of power isolation. And the CPU is the best to isolate. Of course that means another power cord, fuse, vibration treatment, etc. Btw, these cables are very flexible and stay the way you bend them without fighting to go back to their original position. They are the best DC cables I have heard. Highly recommended. Okay, let's fire up this guy now... if I don't post in a while it either exploded or I am really enjoying the music
  7. I know I did not respond to you. They are called CHC-REG and are designed by Sean Jacobs. I was looking for a link on his web site but could not find a lot of info. There are two regulators on a board, one board per rail, so it is some kind of dual regulation. I did not want to post too much, provide close up pictures, part numbers, etc. due to respect of Sean's intellectual property. I saw Taiko SGM's regulators on aliexpress the other day cloned by the Chinese and am cautious what I post.
  8. Thank you for all the comments, suggestions, feedback, messages, etc. You guys are great! I have made some changes to the original configuration. 1. I changed the CPU from Intel Core i9-9900 to an Intel Core i9-9900K. I have always used the 9900K in my Intel Core builds. But I wanted to try the lower TDP 9900 instead. However, @StreamFidelity made a good comment, and I changed it back to the i9-9900K. That’s what I am using now. 2. @marce was quick enough to make a comment before I had a chance to make the change. But it was a good comment. I ran separate ground wires from the ATX connector to each regulator. I was planning to do that anyway. It’s done now. I ran the additional ground wires to pins 5 and 7 on the ATX connector. 3. This may be surprising. I changed the motherboard. It’s a long story, but I always wanted to try the ASUS Z390-I ROG Strix Gaming Intel LGA 1151 mini ITX motherboard. I tried it, and I liked it a lot. And I decided to keep the ASUS. It’s great. That is consistent with the AMD motherboard I use - ASUS X470-I ROG Strix Gaming AMD AM4 mITX. I am now back on track and will post the few remaining parts of the build soon.
  9. The transformer is from Toroidy. It's their Supreme Audio Grade V2 version but customized for the requirements of this project. Their transformers are 10x more expensive than similar specs Chinese transformers. I have seen them on some ultra high-end gear recently. The Cerat Kassandra 2 REF DAC comes to mind, but I've seen them at other places too, just can't remember now. They come epoxied in the case by default.
  10. Here is the full change log: 20200114 - Summus server special features (only active on Summus server) - StylusEP can be used as HQplayer endpoint in Roon - Added option to convert all formats (except DSD) to WAV for Stylus + HQPe upsampling - Added support for UPnP renderer endpoints - Added option to buffer entire Queue to RAM - Added indication of cached (light blue) and buffered songs (blue) in Queue - Added option to skip library scan on startup - Added 'Recendly added' Dashboard menu item - Added intro page with option to change registration email for first-time users - Added Expert option: Disk spindown timeout - Added SMB version option to 'Add network drive' dialog - Fixed Youtube playback issue that recently appeared due to changes in Youtube API made by Google - Introducing 'Radio' flag - after last song put in Queue by user, next song is automatically added from local library (basic matching for now - to be improved..) - 'Complete instalation' function now fully prepares the system - the same as 'Install' - Fixed Stylus + HQPe Qobuz playback (song is fully buffered before it is given to HQPe) - Fixed calculation of available RAM for entering ramroot - Fixed Artist pic retrieval for currently playing song - Updated HQPe to 4.12.2 - Added latest HQPe options to Euphony HQPe settings - Monitor Roon updates while in ramroot (if update happened root fs is saved to disk automatically) - Hostname change and timezone change should work in ramroot - Improved update image download behaviour (you can resume interrupted/incomplete download) - Optimised communication between browser client and server - Click on artist name opens artist's page on LastFM - CTRL + click on release number on Library page opens Settings with Expert section expanded - Fixed search for NAA devices on network - Improved checks for internet connectivity - Kernel security mitigations are disabled now This is the option I am excited about: - Added option to buffer entire Queue to RAM
  11. He has: Keces P8 (19V) --> HDPlex 800 Group 1 --> EPS (12V) and ATX (3.3V, 5V, 12V) Keces P8 (19V) --> HDPlex 800 Group 2 --> EPS (12V) The HDPlex is converting the 19V to 12V /for the EPS connector(s)/. Look at the diagram he sent, it makes perfect sense (to me).
  12. Absolutely. I am just assuming that P8 (12V) --> EPS might be a cleaner DC than P8 --> Hdplex DC-to-DC --> EPS.
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