Welcome to this thread.
There is some information about connecting Fiio devices in post #3, but the x1 is not specifically mentioned.
Quite a few Mojo owners use Fiio transports, so hopefully someone will provide an answer.
Here are the signal paths for an appropriate Co-Axial cable to connect Fiio X3ii and X5ii DAPs to Mojos Co-Axial digital input:
(pin-out identities based upon these:
www.head-fi.org/t/784602/14985#post_12467535 )
IMPORTANT: James (CEO of Fiio) has privately confirmed to me that the above diagram is definitely correct for X3ii, X5ii, and X7
Alternatively, if you wish to use a
stereo TRS plug at the Mojo end (instead of the mono TS plug in the above picture, which is really all that is required), then the pin connections would be as follows:
(pin-out identities based upon this:
www.head-fi.org/t/784602/18675#post_12651727)
↑
Lately, I have been recommending a certain type of TRS Connector(or Plug) for the coaxial cable to connect a Fiio X3ii/X5ii/X7 to a Mojo, and it appears to be causing some confusion here. Hopefully this post will help clarify this confusion.
PLEASE NOTE: This post only applies to Fiio X3 2
nd Gen, X5 2
nd Gen and X7 devices. Before we get into the topic, here is a picture to understand what TS, TRS, TRRS Connectors are:
Source:
http://www.cablechick.com.au/blog/understanding-trrs-and-audio-jacks/
Fiio X3ii, X5ii and X7 devices use a single 3.5mm port that is shared for both Line-Out and Coaxial Digital-Out purposes. A regular coax cable will NOT work with these devices. You need a modified cable with 3.5mm TRRS Connector to work with these devices. The TRRS pins on this coaxial cable have to be configured as shown in the picture below:
Source:
http://fiio.me/forum.php?mod=viewthread&tid=40478
Now, the coax port on the Mojo is a simple, dedicated 3.5mm coax port. So all it needs is a 3.5mm TS Connector. So in order to connect a Fiio X3ii/X5ii/X7 to a Mojo, you need a coax cable with 3.5mm TRRS Connector on one end and, a 3.5mm TS Connector on the other. The TRRS end goes into the Fiio devices and the TS end goes into the Mojo.
EDITOR'S note: There are cable makers who sell this modified cable in both Straight Connectors and Right-Angle Connectors version, but it can be necessary to make a special-order. Dyson Audio used to make them, but this maker became unreliable, and is best avoided until further notice.
If you want a cable with Straight Connectors on both end, you can stop right here and can right away purchase it from one of these places:
Moon-Audio (US) /
Custom-Cable (UK) /
Uranus (Malaysia)
Now the
PROBLEM arises, when you want this cable with Right-Angle Connectors. For some reason, the only Right-Angle version of TS Connector, that seems to be available in the market is this plastic one:
I did not like this plastic connector. I looked around for a solution and I found out that, cable makers like
Moon-Audio and
Uranus, used a TRS Connector instead on the TS Connector, in their Right-Angle version of the coax cable. But now I had ANOTHER PROBLEM. Uranus-Cable does not ship outside Malaysia and the cable from Moon-Audio was too expensive.
Hope this helps!
-EagleWings