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

[Hotwire]

On some early units was a SSSHHHHHHH like waterfall hiss that comes through the IEM / headphone which is also audible externally when the ear is placed to the unit. It's very noticeable and the exact same sound as through the cable. If there was no input plugged in (USB, coaxial) there was no noise externally or through the IEM / headphone. The same noise was not present when charging, only with USB or coaxial plugged in. That's the noise that had the major issue. The minor sqeek or coil noise or whatever when charging is what Chord is saying is a non-issue and related to the power source according to Chord. You may be getting the two things mixed up.

In the end buy it if you want one and if there is an issue return it to your local dealer.

Thanks once more Relic. That's the full picture I probably didn't get. Still there are some customers reporting noise and others reporting clean of noise. I guess I'll have to try and find a good merchant. I just hate it when a purchase feels like a lottery, and you're relying on the helping hand of a merchant, rather than the manufacturer.
 
FWIW, to anyone that is reading: are there any among us that can state that their Mojo does not produce any unwanted noises in any circumstance (both  the hissing during PSU + USB audio source connected at the same time, as well as no audible coil whine when only a PSU is connected)?
 
 
 
Edit:

   
 
 
 
My original Mojo (serial M0202XX) had the white noise issue so I had it replaced to a new one (serial M0208XX) which resolved the problem completely.
 
Both models have the charging whine (not from the headphones but the unit itself making a whine), so it's probably not related to the production batch.
Anyhow, the charging whine only occurs if I use a high current charger, whereas it makes no whine on standard 1A charger, so I'm not too concerned.
 
According to my USB current meter, Mojo only draws less than 1A during charging, so it's a bit pointless to use the high current charger anyway.
 

Thank you very much for the information. I'll take that into account when I'm auditioning mine.

 

[headwhacker]

  Thanks once more Relic. That's the full picture I probably didn't get. Still there are some customers reporting noise and others reporting clean of noise. I guess I'll have to try and find a good merchant. I just hate it when a purchase feels like a lottery, and you're relying on the helping hand of a merchant, rather than the manufacturer.
 
FWIW, to anyone that is reading: are there any among us that can state that their Mojo does not produce any unwanted noises in any circumstance (hissing during PSU + USB audio source connected at the same time, as well as no audible coil whine when only a PSU is connected)?
 
 
 
Edit:
Thank you very much for the information. I'll take that into account when I'm auditioning mine.

Mine had the noise. Got it replaced. The replacement is noise free. Happy listening on it on any circumstances.

 

[joshk4]

Just got mine today! cant wait to try... so do we need to fully charge this on intial set up of 10 or 4 hours? (Not sure which batch my one is).
 
Also, I do find the charging light to be difficult t see lol.
 
But what a small package!

 

[raelamb]

Further, I tested using the TuneShell app and the Onkyo HF Player app and it worked on both. I also can confirm it works with the iPod Touch running iOS 9.2

Spook you are my hero
 
Thx

 

[x RELIC x]

Just got mine today! cant wait to try... so do we need to fully charge this on intial set up of 10 or 4 hours? (Not sure which batch my one is).

Also, I do find the charging light to be difficult t see lol.

But what a small package!

When the (difficult to see) light goes out you are ready to groove!

 

[joshk4]

When the (difficult to see) light goes out you are ready to groove!

 
Haha indeed
 
I will definitely be mojo ready!!
 
Lets see how it compares to the HA-2

 

[spook76]

Further, I tested using the TuneShell app and the Onkyo HF Player app and it worked on both. I also can confirm it works with the iPod Touch running iOS 9.2

Spook you are my hero

Thx

You are most welcome.

I have both an iPhone and iPod Touch. The only reason I have Onkyo on my iPhone it to test iOS updates so it is my pleasure to be the proverbial canary in the coal mine.

 

[SearchOfSub]

Thanks once more Relic. That's the full picture I probably didn't get. Still there are some customers reporting noise and others reporting clean of noise. I guess I'll have to try and find a good merchant. I just hate it when a purchase feels like a lottery, and you're relying on the helping hand of a merchant, rather than the manufacturer.

FWIW, to anyone that is reading: are there any among us that can state that their Mojo does not produce any unwanted noises in any circumstance (both  the hissing during PSU + USB audio source connected at the same time, as well as no audible coil whine when only a PSU is connected)?



Edit:
Thank you very much for the information. I'll take that into account when I'm auditioning mine.

edit.

 

[mscott58]

FWIW, to anyone that is reading: are there any among us that can state that their Mojo does not produce any unwanted noises in any circumstance (both  the hissing during PSU + USB audio source connected at the same time, as well as no audible coil whine when only a PSU is connected)?

My Mojo made a bit of a humming sound the very first time I went to charge it, but I was using one of the small Apple "cube" charging units and it seemed to be having a hard time putting out the right juice. It might also have been a knock-off seeing how many companies have copied it. 
 
Since moving to charging it with a much beefier Anker Powerport 2 I haven't had any more sounds, either during charging or not or even when listening at the same time as charging. 
 
Hope this helps and cheers 

 

[Hotwire]

Definitely helps Mscott58.
 
In regards to that Apple charger, if it is a knock-off, better throw it away and get something with actual QC. Coincidentally watched a tear-down on two of those from EEVBlog the other day: https://www.youtube.com/watch?v=wi-b9k-0KfE . Those knock-offs are dangerous piles of EE waste.

 

[joshk4]

OK thats strange.... I just read at the back of the box and it mentioned "Please fully charge the unit before first use (minimum 10 hours)."
 
Guess will be 10 hours

 

[x RELIC x]

OK thats strange.... I just read at the back of the box and it mentioned "Please fully charge the unit before first use (minimum 10 hours)."

Guess will be 10 hours

And multiple times in the thread Chord has said that is only a precaution for units that have depleted batteries from sitting on a shelf for a long time.

 

[sabloke]

Picking up mine in 3 hours! I guess it will be a very long night as no way I'm going to sleep before charging it 4 hours and playing with it...

 

[joshk4]

And multiple times in the thread Chord has said that is only a precaution for units that have depleted batteries from sitting on a shelf for a long time.

 
Yeah just wondering if mine had depleted batteries from sitting on the shelf for too long.

 

[sabloke]

What's too long? The thing was launched only a couple of months ago and I'm sure the initial stock was sold fairly quickly.