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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. heliuscc

    Cheap second hand AK100 and sysconcepts cable. All FLAC music. DSD works as well but does make my AK100 a touch laggy
  2. brettws
    Has anyone tested Lavri USB - Lightning cable with Mojo and iOS 9.3?
  3. fluidz
    Just out of the blue whilst charging (been on charge for 30 minutes), my Mojo has started to coil whine and won't stop unless I take the power cable out.  
    Usually the scratchy loud coil whine only appears for 5 seconds after plugging the mojo on to charge then stops. This time the coil whine won't go away.
    As soon as I plug in usb power the coil whine starts for its initial 5 seconds, as usual, sometimes stops for a brief second, starts again - this time it changes pitch until it's no longer scratchy but more of a whistle and continues to fluctuate in pitch from being a kettle type whistle to a faint electrical noise but still loud enough to be annoying.  
    I can hear it from at least a meter away with my computer fans in the background. 
    I have tried different usb plugs and a different cable, and plugging it into my Nvidia shield Usb out, no difference.  I thought the coil whine noise during boot was a bit strange when i first got it, obviously was defective to begin with.
    Along with the included micro Usb cable being loose and not making a solid connection - It breaks up with little play (which I blame the port, not the cable) I have no choice other than to return it to Amazon.
    Fingers crossed that its replacement is fine. 
    Take a listen (recorded with a UMIK 1 mic) 
    WARNING - May trigger tinnitus
    Flac - https://dl.dropboxusercontent.com/u/20406996/Head%20fi/Chord%20Mojo%20noise.flac
    Mp3 - https://dl.dropboxusercontent.com/u/20406996/Head%20fi/Chord%20Mojo%20noise.mp3
    You can hear my computer fans in the background. 
  4. Skampmeister
    Everyone should do themselves a favour and buy an Apple iPhone charger, no reports so far with charging issues with those, mine is quiet as a mouse.
  5. fluidz
    Will dig mine out of the loft now and test.  I've been using an Ipad charger and my Shield Tv up until now.
    Edit - 1 amp iphone 6 charger = no difference to my ipad charger, same coil whine.  
    Edit 2 - With the 1amp Apple charger The Mojo is now making a ticking noise.  Will upload audio file. 
    Edit 3 - Turned power off and on, ticking noise has gone, coil whine is back. 
    Flac - https://dl.dropboxusercontent.com/u/20406996/Head%20fi/Mojo%20ticking.flac
    Mp3 - https://dl.dropboxusercontent.com/u/20406996/Head%20fi/Mojo%20ticking.mp3
    Light - Man likes this.
  6. Ra97oR

    What cable are you using? Try running it with the bundled cable if you are not using it already.
    Charger and cable combos I have tried: http://www.head-fi.org/t/784602/chord-mojo-the-official-thread-please-read-the-3rd-post/9810#post_12277858
    I am using Anker PowerPort 5 with the Anker PowerLine cable with my Mojo.
  7. Light - Man

    Interesting! maybe the Apple is rotten and it wants to become an orchard! [​IMG]
    p.s. I thought the Mp3 sounded better than the Flac. [​IMG]
  8. Reignfire
    Has anyone tried pairing Sony NW-A25 to the Mojo? How's the SQ?
  9. oleWhiskey
    I actually let my iPhone die everyday so that it could have nice fresh charge over night every night.   OCD right!
  10. ezphoto
    Where can I buy FiiO L19 cable in US? I can't even find them on eBay.
  11. fluidz
    Uploaded a video of the Mojo being fed power by three different plugs and three different cables.  Ipad 4 plug.  Iphone 6 plug.  Htc One m7 plug. 
  12. GreenBow
    OK so no-one else has this problem. That's not good. (Well it's good for everyone else though.)
  13. SearchOfSub

    Hahaha lol.
  14. lurk
    all also hiss?
  15. fluidz
    Connecting to an Nvidia Shield Tv Usb (which is silent) also causes the Mojo to Whine.  Power source doesn't seem to make any difference for my Mojo.   
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