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numlog

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  1. I compared the integrated USB2 ,3.0 and 3.1 on a desktop Mobo and later 3.0 and 3.1 ports in form of PCIe cards with low noise power supply. Even for USB2 devices the 3.0 and 3.1 do , to my ears at least, provide better sound quality in all cases, 3.1 being the best.
  2. numlog

    PCIe USB and SATA card modified for audio

    Just want to confirm using a 20MHz XO instead for the USB card worked, you can probably do the same for Renesas uPD72020 cards too which use a 24MHz crystal. Now, AFAIK the async DAC theory is that PC side USB clocks shouldnt matter, this is very obviously not true. There is a true improvement to sound, affecting resolution and timing, and makes the whole PCIe card endeavor feel worthwhile. I hope the crystek clocks wont be too severe a case of diminishing returns but they're definitely next on the to do list.
  3. my Mobo has a M.2 Slot and using this slot is really the only way for me to use full speed m.2, because running both x16 pcie slots at x4 or more disables x1 slots, meaning I cant use USB card (and that would also mean downgrading to previous USB3.0 card cos the USB3.1 card uses a x16 slot). But the M.2 slot on the MoBo turns out to be best way. right beside it is a big 3.3v linear regulator, its nice the MoBo is already cleaning up the power a bit but it means there is an easy way to disconnect the MoBos power and connect external supply to the M.2 card
  4. by cutting PCIe power pin traces and soldering on an external supply, a sloppy solution but it works. just after finding that this guy found another way. this one doesnt require modding but uses 5V external power when M.2 are powered with 3.3V( probably for the same reason the adapter uses 12V from PCIe slot, because PC 3.3V rail is expected to be dirty), with probably a DC-DC converter onboard to drop it down, so Id still prefer modify the adapter and use my own 3.3V supply.
  5. Nice, didnt know that PCI power input were a thing on some mobos.
  6. How do you supply PCIe power from the HDPLEX? do you mean with a molex, SATA etc. to the PCI card? I ask because looking at optane PCIe cards I dont see any power inputs on them and cant understand how you would easily power it. Is the power usage much higher to support these high speeds?
  7. than SATA power cable directly from PSU? so no way to know which technology is actually better for audio without external power for both which I assume no one has done yet? logically, for the reasons mentioned above it would be a suprise if it wasnt better (and the total cost to switch to m.2 would be less than 1 fancy SATA cable). in the case of going to m.2 the old SSD could be used for music storage/playback too... do you or anyone know if its better to have 2 drives for OS and music, pretending they are both identical, than everything on one? Might try the M.2 drive to settle what the best form of storage is.
  8. EDIT: sorry, I mean NVMe M.2 drives has anyone compared the sound difference between an M.2 stick drive and SATA SSD? I have only used SATA SSD for audio PC because I already owned one, It also fairly easily allowed use of external supply with them. I had bought a cheap SATA PCI card and modified that to use external supply too, and was considering buying a hifi SATA cable to complete the optimisation of SATA storage... but it turns out that with a card adapter like this M.2 can be powered externally too which I thought wasnt possible. Aside from this critical advantage SATA had over M.2 , looking at the adapter it also appears that it natively connects to PCI which is a pretty substantial... can upgrading clocks or using better power supply for a SATA PCI controller ever beat a native PCI connection? Better yet no cables, another huge problem area of SATA eliminated. And then the actual question I was wondering: Could M.2 sticks actually sound better than SSDs under the same conditions? Some have said in this thread SATA is better than m.2 with power filters etc. but what about without it? both types using the PC PSU?
  9. numlog

    PCIe USB and SATA card modified for audio

    Ive accepted DIY digital cables are a complete waste of time. I had no idea the complexity of the impedance spec till today after making a thread earlier (not for DIY purposes, to understand how ''HiFi'' SATA/USB cables could advertise use of the same low gauge for all cable lengths) After more time listening to the supra USB cable its obviously much better than any DIY or generic cable, The extreme mellowness compared to the other cables took some mental adjustment, there is plenty more detail and realism present its just not in your face whatsoever. With high quality conductors and lots of shielding you can probably make a USB cable thats sounds better or gives an impression of 'quality'' or ''detail' compared to generic cables, but its still a toy compared to the most basic ''proper'' cable.
  10. numlog

    PCIe USB and SATA card modified for audio

    Replacing the clock on these cards with something much better (crystek 575) is super easy In the datasheet for the Marvell SATA card chip it says it can except a 25MHZ clock input or drive a crystal with its own internal circuit. it uses a crystal, i assume as its cheapest option, removing the crystal and using a cheap but decent 25MHz XO gave noticeable improvement. I also tried with the ASMedia USB3.1 chip which in its Datasheet says it can use a 48MHz clock input or drive a 20MHZ crystal with its own internal circuit (odd that it wants different, non divisible frequencies), it is also using a crystal. sadly using the 48MHz XO input didnt work. checked the datasheet again and found in the notesthat apparently the 48MHz clock input feature was '''removed'' in a newer version of the chip.... very annoying. it could be possible to use 20MHz XO instead, will have to try it.
  11. With RF cables you have special connectors that can be used terminate the cable in the correct impedance, so cable construction itself is more flexible. Do SATA and USB cables use a similar feature in their connectors? AFAIK they dont. looking at many of these cables, gauge can vary irrespective of length. e.g 3 SATA cables: 25CM with 26AWG conductors, 45cm also with 26AWG conductors, and 20CM with 30AWG. same with USB cables, lots of varying lengths with almost all 26AWG conductors. Can anyone explain how these cables are made to the correct specifications with the same wire gauge and vastly different lengths?
  12. numlog

    what is better than Jriver

    true, there are too many variables in the software itself to label it one way or another, I tended to choose settings that increase detail above all else , eg minimum buffer size, wasapi over KS plus many others. infact im reminded now that I have been using wasapi mainly for its clean but clinical sound but KS with phase alignment was extremely involving and musical sounding... with no DC blocking at all on the amp it wasnt safe to use so ended up forgetting all about it.
  13. numlog

    Confused about DSD and DAC's

    could you link them to see what kind of noise were dealing with?
  14. numlog

    Confused about DSD and DAC's

    Does DSD256 or 512 really have lower noise in practice when your CPU will be under 4-8 times more load making the conversion? based on experience with HQ player the higher DSD rates sounded worse to me, possibly better resolution but harsher, unnatural... its been a while and could have been related to the DAC (topping D50) With offline conversion I could see the benefits, that is really impractical though.
  15. numlog

    what is better than Jriver

    Having used foobar, HQP, XXHE, Audirvana - Jriver is still the most accessible player. XXHE and HQ Player are the serious, analytical players, for focused listening they are the better choice but their general sound, when you arent entirely focused on the music, arent the best, HQ player being very bright and XXHE being very laidback, both fairly bass light too for some reason (without any upsampling). Jriver sounds lively, bassy, very smooth, the general impression you get from listening to it is great.
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