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Chord Mojo DAC-amp ☆★►FAQ in 3rd post!◄★☆

Discussion in 'Portable Source Gear' started by Mython, Oct 14, 2015.
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  1. h1f1add1cted
    Question to Chord, why the Mojo has a slight treble roll off with an IEM?
     
    White line = Mojo without load , Green line = Mojo with load:
     
    Chordmojormaa.png
    (the slight bass roll of is normal with my sound card)
     
    I would unterstand if we would have a digital filter like with micro iDSD:
     
    spectrumidsd_553716.png
     
     
    But this isn't the case with Mojo and the frequency change is only with a attached IEM. The output impedance is pretty low with 0,075 ohms, this can't be the reason for the treble roll off.
     
    Example with the cheap HRT dSP dac/amp which has 0,5 ohms output impedance, with the same IEM as on Mojo I tested:
     
    dsp_580934.png
    (the slight bass roll of is normal with my sound card)
     
    No treble roll off.
     
  2. gavinfabl

    Thanks, that's an expensive reply too :)



    Thank you :)
     
    OK-Guy likes this.
  3. ksb643
    @ Mojo ideas 
    Or anyone else...
     
    I can't get dsd files to play in dsd. I was using JRMC19 and now  downloaded 21 with the same result. I've tried wasapi, asio and kernel streaming. The sample frequency is showing 768k.
     
    Thanks! Screenshot4.png
     
  4. JDSM

    Thank you for clearing up the cable connection for the X5 to Mojo .
     
    Your picture shows the X5 and Mojo side by side.
    Have you tried to band or brick the two together as a stack ?
    Any chance you could take a picture of the two stacked together ?
    Im trying to figure out what bands or stacking kit I can use .
     
  5. x RELIC x Contributor

    I'm guessing you are referring to myself (it's helpful to address the member you are responding to :wink: )

    You can use one band and it won't interfere with the wheel / button operation or the screen. The tighter the band the better it holds the Mojo.

    image.jpg image.jpg

    Or you can use the X5 stacking kit I posted pictures of earlier in the thread.

    image.jpg image.jpg

    I'll be adding these to the Wiki later, but I'm going to sleep now.

    Hope this helps. :)
     
  6. JaZZ Contributor
     
    I'd like to know as well – and it's definitely audible.
     
    Maybe Rob Watts will answer this?
     
  7. headwhacker
     
     
    Hi, are you able to do the measurement with a different load to check the roll off if consistent?
     
    HiFiChris likes this.
  8. hitman1

    Thanks I bought this OTG cable from Amazon and I am going to buy UAPP (USB Audio Player Pro). If the tow of these do  not work i am going to go nuts. Will let you know how it works. thanks to the HEADFI community for all your help.
     
  9. Mython Contributor
     
    Unfortunately, youtube's compression has rendered the treble in this extremely splashy, but if you can find it cheap on CD, there's more Tanita + cymbals in this track (the proper album is actually pretty well recorded):
     

     
  10. ThatPhil
    Go to playback options and change the bitstreaming to dsd
      Untitled.png
     
  11. Rob Watts

    Its because the OP stage is integrated with the OP filter. This means that Mojo analogue section is very simple, so giving Mojo's transparency, but the downside is a small variation in frequency response with load impedance.
     
    Rob
     
    Chord Electronics Stay updated on Chord Electronics at their sponsor page on Head-Fi.
     
    https://www.facebook.com/chordelectronics https://twitter.com/chordaudio http://www.chordelectronics.co.uk/
    onsionsi likes this.
  12. sling5s
    "Originally Posted by Hachiko270296 /img/forum/go_quote.gif

    Here's my Mojo sound impressions after owing it for a while.

    The Mojo I would describe as similar to the Hugo but a tad warmer. I would say it's still on the analytical side of neutral. It has a kind of intimate sound to it than the Hugo but it isn't as resolving. The Hugo is more spacious, better detailed and better in every way. This isn't s bad thing as its 4 times the price.

    Compared to the Dragonfly 1.2 they are a similar sound with the DF being on the warmer side. Both have s detailed sound but the DF is a bit more musical and run sounding where the Mojo is s bit more analytical. I wouldn't say one is better than the other and they are both pretty much equal. I don't know if thei makes the Mojo overpriced or the Dragonfly amazing value. The Mojo has more functionality so this could be s deal breaker.

    Compared to the Fiio X5 Dac section they sound very similar with the Fiio being a tad more airy and open. Mids sound better on the Fiio where as the Mojo has a bit more elevated bass. Again like with the DF they are pretty similar. I'd say they are also pretty close in technicality maybe a slight preference edge to the Mojo as a DAC.

    Will write a full review soon."

     
    According to these impressions, that puts the Mojo on the level and sound of the Geek Out v.2+ 
    I remember another impression said they put the Mojo in the same ball park with the Yggy/Raggy.
     
    Which is it? 
     
  13. auradud3
    hello all, i have been reading and salivating about the Mojo, i am looking for any input regarding using the Mojo in use with my ZX-2, I have zero issues with my ZX-2, love the sound combined with my K10's, but like the rest of you i am looking for the next step.
     
    do any of you have experience with the combination? and how about connectivity? i have been reading this thread but have not found anything relating to this subject.
     
    thanks in advance for all your words of forthcoming experience!
     
  14. h1f1add1cted

    Look on the frist page...
     
    Connecting Mojo to Sony devices
     
    www.head-fi.org/t/784602/chord-mojo-the-official-thread/555#post_11999231
     
    www.head-fi.org/t/784602/chord-mojo-the-official-thread/1005#post_12005228
     
    www.amazon.com/gp/product/B00FF086HE?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
     
    www.head-fi.org/t/784602/chord-mojo-the-official-thread/1035#post_12005341
     
    www.head-fi.org/t/784602/chord-mojo-the-official-thread/1230#post_12008886
     
    www.head-fi.org/t/784602/chord-mojo-the-official-thread/1455#post_12012351


     
    emrelights1973 likes this.
  15. spook76
    Is there anyway to bypass the amp on the Mojo but still utilize the DAC? Will the line out function accomplish a bypass?
     
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