Chord Mojo(1) DAC-amp ☆★►FAQ in 3rd post!◄★☆

[bobeau]

I love this forum! Thanks for sharing this. I will use my Mojo with the Hiby R3, so I bought Shanling L2 cable for it. But if one day I come back to iPhone as a transport, I will buy the cable you have linked.

Yeah, for me this is a minor lifesaver. I'm a remote working software dev and often work out of cafes that have wifi too sketchy to reliably stream Tidal hifi. So much nicer in those situations to have a tidy stack of my iPhone 6SE/mojo on a cramped table w/ my MBP and large mocha/latte/bagel, etc.

 

[Jdnoss]

Just an update for the newer Meenova cable - has been working without issue over the past 24 hours. I've spent at least a few hours listening, plugged/unplugged a few times. It's so nice to be able to use my iPhone w/ Mojo again.

What version of IOS are you using. I noticed that the Penon Audio cable says it is only good up to 11.2.6 and no 11.3

 

[491326]

So I've been getting buzzing noises when my mojo is plugged into my phone. I first thought it might be what people say is rfi or something idk, and it goes away with airplane mode. I don't want to set my phone to airplane mode all the time but the buzzing is really bad at times. I did some testing and noticed that the buzzing is only present when the phone is part of the system. If i plug the mojo into my computer and have my phone sitting atop my mojo, theres is no buzzing problem. anyone know how to fix it without relying on airplane mode?

 

[435279]

So I've been getting buzzing noises when my mojo is plugged into my phone. I first thought it might be what people say is rfi or something idk, and it goes away with airplane mode. I don't want to set my phone to airplane mode all the time but the buzzing is really bad at times. I did some testing and noticed that the buzzing is only present when the phone is part of the system. If i plug the mojo into my computer and have my phone sitting atop my mojo, theres is no buzzing problem. anyone know how to fix it without relying on airplane mode?

Get a Poly Or keep the wires away from the the phone. The interference is caused by the phone's magnetic field generating small currents in the wires and the Mojo itself. Use a ferrite core on the USB input. I find a good quality twisted or well screened cable on the IEM or Headphone cable helps too.

 

[Mython]

So I've been getting buzzing noises when my mojo is plugged into my phone. I first thought it might be what people say is rfi or something idk, and it goes away with airplane mode. I don't want to set my phone to airplane mode all the time but the buzzing is really bad at times. I did some testing and noticed that the buzzing is only present when the phone is part of the system. If i plug the mojo into my computer and have my phone sitting atop my mojo, theres is no buzzing problem. anyone know how to fix it without relying on airplane mode?

Just for the sake of troubleshooting the issue, it might be worth trying an alternative cable, just fo check that your cable doesn't have a dodgy connection at one end or the other, or a dodgy CCK chip connection, or even a dodgy strand of wire within the sheath.

 

[krismusic]

So I've been getting buzzing noises when my mojo is plugged into my phone. I first thought it might be what people say is rfi or something idk, and it goes away with airplane mode. I don't want to set my phone to airplane mode all the time but the buzzing is really bad at times. I did some testing and noticed that the buzzing is only present when the phone is part of the system. If i plug the mojo into my computer and have my phone sitting atop my mojo, theres is no buzzing problem. anyone know how to fix it without relying on airplane mode?

What phone is it?

 

[491326]

What phone is it?

lg v30

 

[cirodts]

II have the v20 I have no problem, use as hiby player and let us know

 

[bobeau]

What version of IOS are you using. I noticed that the Penon Audio cable says it is only good up to 11.2.6 and no 11.3

I'm at 11.3. A Penon Audio owner also piped in and said they're on 11.3 with no issues, have had the cable since last summer without incident.

The caveat on my end is I'm only playing hifi thru Tidal, so no high res. The Penon Audio description says something about "formats decoding", so perhaps that's what it's getting at.

Also per the conversation directly above, I haven't noticed any buzzing in the audio stream and am not putting my iPhone in airplane mode - I'm very familiar with that buzzing too and have fought it in the past. Haven't really put it through its paces yet in areas with marginal reception though.

 

[daberti]

If you can find a cable with a ferrite choke it is even better because it eliminates or reduces the noises coming from cellphone/wifi reception. You won't need a ferrite choke if you gonna use your phone in airplane mode. Ferrite chokes can be bought seperately. It is easy to install.

Where to find online in EU?
TIA

 

[musickid]

Does using chords quarter inch to 3.5mm adaptor generally have any negative effect on sq as opposed to plugging the headphone directly into mojo? The metal on metal contact? In my situation my oppo pm1 3.5mm jack does not fit mojo so i use the adaptor.

 

[Mython]

Where to find online in EU?
TIA

You can find chokes on Amazon

www.amazon.co.uk/s/ref=nb_sb_noss_2/257-6185714-7616656?url=search-alias%3Daps&field-keywords=ferrite+choke

I suggest you accurately measure the outside diameter (the thickness) of your cable, and then buy ferrites that have an internal diameter that is as close-fitting for your cable as possible.

 

[daberti]

You can find chokes on Amazon

www.amazon.co.uk/s/ref=nb_sb_noss_2/257-6185714-7616656?url=search-alias%3Daps&field-keywords=ferrite+choke

I suggest you accurately measure the outside diameter (the thickness) of your cable, and then buy ferrites that have an internal diameter that is as close-fitting for your cable as possible.

Thanks for that! I've a Mitutoyo caliper at the ready

 

[Mython]

I'll wager a whole $5 you end up buying 5mm ferrites!

 

[miketlse]

Where to find online in EU?
TIA

I bought willful ferrites, but they don't seem to sell them anymore.
There are quite a few other sellers, such as this https://www.amazon.fr/TOOGOO-filtre-noyau-ferrite-supprimer/dp/B00F4MEBKO .
@Mython is correct to advise buying ferrites, with an internal diameter that matches your cable.