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The Zishan dsd's corner

Discussion in 'Portable Source Gear' started by neog007, Nov 17, 2016.
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  1. HeyManslowdown97
    “half ESR, and shift HPF cutoff frequency down by 1 octave, which could be beneficial for low impedance earphones bass response.”

    I wouldn’t do it! That’s set by DSD standards. Unless you want tonic issues on other tracks. It’s tuned that way for a reason. But maybe if you are tone deft or listen to only electronic music like drum and bass minimalism it may not annoy you but I want my music to be in the correct pitch and key.

    The limits of dithering, modulator filters on the software side makes you will never be able to get it sound “perfectly” without (great) software algorithms. DSD is unstable on 1 bit and you can’t DoP on the Zishan Firmware. That’s the limit you get with DSD unless you have software with those filters baked in the firmware (like the stock manufacturing Ak4497 digital filters on the Zishan).

    I’m looking to crack this problem and others a. Getting the filters on the firmware b. Embedding them In the files themselves.

    This requires conversion software and a DSD dac via USB A to listen for sibliance, etc on low impedience headphones.

    With great digtial filter FX you can expect more transient music without harsh frequencies when it’s done right.

    DXD thats is 384 are up in PCM sounds great too with these conversions. They are also recognized by Native DSD. However don’t sound great on the Zishan. I would imagine the Sable chip DACs it’s does??

    It may be more beneficial as a mod to look at running the board on an open source motherboard.

    Updated: Been Op Amp rolling lately and I just picked up an ADA4637 as recommended by someone on the forum. Like the Opa637 it’s set at +6 dB in gain and since my files are set at -6db to -12db I’m allowing the amp and my low impedience to power them and it sounds better with not harsh frequency. It’s worth experiencing sans making a big hardware mod commitment.

    Especially what you trying to do is align your specific rig to what sounds best!

    (As a side note now have also the LDOs and oscillator for the electronical mods mentioned on this thread. Awaiting my hot air station with 15 hot air tips!)
     
    Last edited: Mar 12, 2019
  2. silverfishla
    I’ve seen this and their V5i. What’s under there? Give it a shot and let us know!
     
  3. endia
    i had asked some time ago for similar chinese opamps (in opamp thread)
    https://www.head-fi.org/threads/the-opamp-thread.432749/page-377#post-13610281

    and got these replies;

     
    Merlin-PT likes this.
  4. Themilkman46290
  5. silverfishla
    I hate fakes, but in some convoluted way, I enjoy seeing this type of fakery. So much effort to try and get you to plunk down $45 only to be completely pissed off (if indeed it sucks). Complete ballsy griftering brings some facet of entertainment for me...unless I was the one who bought one! Hahah
     
    endia likes this.
  6. ThanosD
    How do you suggest fitting 2 extra capacitors? I don't mind ordering 2 extra caps, (free shipping ftw), but I don't think I can fit them.
     
    DBaldock9 likes this.
  7. Ivan TT
    In my experience 6.3mm caps fit between the boards (just), provided there’s no tall part on opposing digital board. I would place them on either side of DIP8 socket or between the DIP8 socket and the edge of the board (where balanced output resistors are), adding wire and heat shrink, obviously they have to be soldered to the output caps terminals.
    I cannot guarantee that they will fit of course, but if you have unsoldered spare caps you can check for fit.
     
    DBaldock9 likes this.
  8. ThanosD
    Ok, I'll check later.
     
  9. Music junky
    where can i find a case for ZiShan DSD?
     
  10. Music junky
    IMG_20190312_123120.jpg
     
    DBaldock9 likes this.
  11. calico88
    430DDE44-9312-468B-8736-422717E2066D.jpeg 113FE44A-FDC3-4861-B63B-8470BB629149.jpeg 602EBD04-E41E-44CF-9B7A-C3EB5F3CFE1B.jpeg
     
    pitsel, Music junky, ThanosD and 4 others like this.
  12. Ivan TT
    New firmware is apparently out, 0.4i
    Will post link shortly.

    http://s000.tinyupload.com/index.php?file_id=58360121163321967098

    Changelog:
    0.4I update log:
    1. Reduce the crash and many more S
    Still need to do:
    1. Play interface long text scrolling and many more

    Flashed, shuffle mode works even when album art is displayed. I may be wrong, but my DSD seems to run much colder.
     
    Last edited: Mar 12, 2019
  13. DBaldock9
    The only thing I'm wishing for is m3u Playlist support... :ksc75smile:
     
  14. kookaudio
    They fit
     
    Last edited: Mar 13, 2019
    Merlin-PT likes this.
  15. kookaudio
    I cant recall the procedure for flashing the new firmware, can anybody remember it please...?
     
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