Chord Mojo(1) DAC-amp ☆★►FAQ in 3rd post!◄★☆
Sep 21, 2019 at 10:38 AM Post #39,226 of 42,759
I think Rob Watts said that optical is the reference sound. Not due to anything internal about the Mojo, but due to no noise being introduced into the Mojo. Noise from the metal cables and RFI. Noise also from noisy PCs and the USB connection. (Hence why some of use Aidioquest Jitterbug on our Mojo USB connection.)
 
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Sep 21, 2019 at 11:13 AM Post #39,227 of 42,759
now that Poly is a much more reliable device (my experience) I find the need to use other source connections to be unnecessary. direct from SD to Mojo provides my ears with the most pleasing sound of all

and yes I do understand not everyone can justify a $700 streaming add on, but Poly has (finally) made it to the party and is welcome to stay
 
Sep 21, 2019 at 1:49 PM Post #39,229 of 42,759
waiting mine in a few days, then will be trying it with my Mojo through coaxial. Let you know :)
I'd recommend going optical, unless you use coaxial with an isolated USB to SPDIF converter like Schiit Eitr or similar. The reason? Coaxial, because it still uses a cable, is also susceptible to carry electrical noise from the source and pick up EMI/RFI from the air, unless it is galvanically isolated. I went that way with a complicated devices chain and I regret it. Optical is much simpler and cost effective.
 
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Sep 21, 2019 at 3:51 PM Post #39,230 of 42,759
I'd recommend going optical, unless you use coaxial with an isolated USB to SPDIF converter like Schiit Eitr or similar. The reason? Coaxial, because it still uses a cable, is also susceptible to carry electrical noise from the source and pick up EMI/RFI from the air, unless it is galvanically isolated. I went that way with a complicated devices chain and I regret it. Optical is much simpler and cost effective.

As a matter of fact I have an USB C to SPDIF from Cayin that hopefully will work with the X10T (it should have this sort of output implemented). But I will look into the optical options and see what happens. Let you know about the result. For sure in my humble experience, USB input is the one that TO ME is less satisfactory and, as stated already by other members, more prone to noise (EMI/RFI).

My experimental rig at the moment will be X10T as a transport, Mojo in "Line out mode" as a DAC and then a Corda Quickstep at the end as the amp. :)
 
Sep 21, 2019 at 4:03 PM Post #39,231 of 42,759
I wasn't satisfied with the Mojo through USB with everything stock. It wasn't until I purchased an isolator, 2 Jitterbugs (1 sitting in an unused port of the same USB bus) and a shielded USB cable that I really started to love the Mojo.

It just makes it more analogue, more controlled treble more defined bass, more natural timbre, better separation, transient response and resolution due to the lower noise distortion, just all around more refined.
 
Sep 21, 2019 at 4:30 PM Post #39,232 of 42,759
I wasn't satisfied with the Mojo through USB with everything stock. It wasn't until I purchased an isolator, 2 Jitterbugs (1 sitting in an unused port of the same USB bus) and a shielded USB cable that I really started to love the Mojo.

It just makes it more analogue, more controlled treble more defined bass, more natural timbre, better separation, transient response and resolution due to the lower noise distortion, just all around more refined.
If I power a chromecast via usb, then use optical to the dac, would putting a jitterbug in line (between power and chromecast) help theoretically?
I’d guess not, that it’s just used to clean up data signals?
 
Sep 21, 2019 at 4:35 PM Post #39,233 of 42,759
If I power a chromecast via usb, then use optical to the dac, would putting a jitterbug in line (between power and chromecast) help theoretically?
I’d guess not, that it’s just used to clean up data signals?
I doubt it.
The jitterbug web page, states that it doesn't reduce jitter, but chord users did find that it reduced electrical noise.
If you use chromecast, then you are removing electrical noise from the equation anyway, so I cannot envisage how jitterbug would add value.
 
Sep 21, 2019 at 4:50 PM Post #39,234 of 42,759
I doubt it.
The jitterbug web page, states that it doesn't reduce jitter, but chord users did find that it reduced electrical noise.
If you use chromecast, then you are removing electrical noise from the equation anyway, so I cannot envisage how jitterbug would add value.
Yeah, even though it's called the Jitterbug, it doesn't reduce jitter but it reduces electrical noise. I don't know if it'll work on the Chromecast theoretically
 
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Sep 22, 2019 at 12:54 AM Post #39,236 of 42,759
Yes, that's the one. I was tempted myself.
I was the person who posted about xduoo x10t V1 as I am using it with HMS. Now xduoo x10t V1 has been discontinued and V2 has better format support. It is very clean transport to the point that the seller from I bought told me that it is excessively warm with mojo which I knew was good thing because a digital transport sounding warm means it has very low jitter. It is bit perfect and not due to some eq it is warm, which I checked from dsd encoded as dop into FLAC . It successfully passed dsd dop flac into HMS.
 
Sep 22, 2019 at 2:31 AM Post #39,237 of 42,759
I believe a while ago in this thread people were talking about a Mojo 2 coming.

Any news on this?
 
Sep 22, 2019 at 9:41 AM Post #39,238 of 42,759
Sep 24, 2019 at 3:32 PM Post #39,239 of 42,759
waiting mine in a few days, then will be trying it with my Mojo through coaxial. Let you know :)

Self quote, the X10T arrived, wow.

IMG-20190924-WA0007.jpg


X10T as source, controlled via HiBy directly from my smartphone, then USB C to coaxial in the Mojo, then line out mode to Corda Quickstep, finally to my Audeze isine 20.

One of the most punchy, detailed and clean rig I have made so far. :)
 
Sep 24, 2019 at 4:14 PM Post #39,240 of 42,759
I would go via optical if I had the option like that. Plus I would not use an amp.

(Great photo.)

That's a great file source though, with the whole choice of connections.

By the way, I would recommend the Mojo case. The case was worth it to me, for peace of mind. I feel far more confident handling and moving my Mojo about. It seems silly, but I was always incredible tense about dropping something on the Mojo and marking it. Mojo always felt very vulnerable to damage on my desktop. Mojo in the original Chord case is stunning too. Worth the entry price just for that, and I don't ever worry about looks.
 
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