[Kentajalli]

i have a question regarding the usb connection between the dac and the pc.
does it work if you use a data only cable, no 5v connection on the cable that`s connecting the dac to the pc?

Short answer is No.
longer answer:
to begin with no such cable exists commercially. So you have to make or modify one.
Secondly, if you could get your hands on one, then it wouldn't work!
you see, the +5V tells the DAC to switch to USB input. without it, you get no sound out.

 

[jeenam]

This is like the 75 ohm coax digital cable BS. A regular RCA unbalanced cable will still pass the digital signal, albeit perhaps not as optimally as one that is spec'd for 75 ohms.

 

[curentatu]

Short answer is No.
longer answer:
to begin with no such cable exists commercially. So you have to make or modify one.
Secondly, if you could get your hands on one, then it wouldn't work!
you see, the +5V tells the DAC to switch to USB input. without it, you get no sound out.

from what i know, some dac`s require 5v to make the usb handshake and some do not, so you can just run with just a data cable.
Uptone USPCB allows you to disable the 5v vbus if your dac does not need it.

 

[jeenam]

In some cases, yes, a cable may be so rubbish it will not pass the proper voltage. But the majority of cables will get the job done.

 

[Kentajalli]

from what i know, some dac`s require 5v to make the usb handshake and some do not, so you can just run with just a data cable.
Uptone USPCB allows you to disable the 5v vbus if your dac does not need it.

Were we talking about some DAC?
My answer was for Mojo.

 

[curentatu]

Were we talking about some DAC?
My answer was for Mojo.

My question was about the Mojo as well.
I simply wanted to know if it needs the 5v handshake or not.

 

[Kentajalli]

My question was about the Mojo as well.
I simply wanted to know if it needs the 5v handshake or not.

It does. it triggers the USB input, and that's all.

 

[miketlse]

i have a question regarding the usb connection between the dac and the pc.
does it work if you use a data only cable, no 5v connection on the cable that`s connecting the dac to the pc?

No. You need the VBUS to be at 5V, to switch the usb receiver on.
https://www.head-fi.org/threads/chord-mojo-1-dac-amp-☆★►faq-in-3rd-post-◄★☆.784602/post-12797614

 

[imnhantran]

I got a 2nd mojo today and somehow the charging light is purple/ blueish and definitely not white when charging, it also has hissing noise when being charged. Is this considered normal? 4 hours mark of charging already and the light is still on

 

[jarnopp]

I got a 2nd mojo today and somehow the charging light is purple/ blueish and definitely not white when charging, it also has hissing noise when being charged. Is this considered normal? 4 hours mark of charging already and the light is still on

Check out the Battery & Charging section in the FAQ (3rd post) here:
https://www.head-fi.org/threads/chord-mojo-1-dac-amp-☆★►faq-in-3rd-post-◄★☆.784602/

 

[miketlse]

I got a 2nd mojo today and somehow the charging light is purple/ blueish and definitely not white when charging, it also has hissing noise when being charged. Is this considered normal? 4 hours mark of charging already and the light is still on

The noise could be caused by your charger generating too much ripple current.

 

[BS5711]

I got a 2nd mojo today and somehow the charging light is purple/ blueish and definitely not white when charging, it also has hissing noise when being charged. Is this considered normal? 4 hours mark of charging already and the light is still on

Purple is the normal charging colour, pretty sure that is throughout the whole charge period, haven’t looked in a while.

The Mojo is 2015 technology so it does charge pretty slowly. Plug it in overnight and forget it.

If the battery doesn’t last well you can get replacement batteries and they appear very easy to install. I have one on hand but have not had the need to use it yet.

 

[vandung2510]

Bro, i was listening to my Mojo with my laptop yesterday, the Mojo suddenly make a really loud pink noise session. Like, if my laptop doesn't make any sound, it stays quiet. But if it makes any sound, even if i scroll the window volume to 1, it's still loud af. Has this happen to anybody?

 

[someyoungguy]

Bro, i was listening to my Mojo with my laptop yesterday, the Mojo suddenly make a really loud pink noise session. Like, if my laptop doesn't make any sound, it stays quiet. But if it makes any sound, even if i scroll the window volume to 1, it's still loud af. Has this happen to anybody?

I’ve had that happen when using Mojo with upsampling in Audirvana. It plays alright for a while and then suddenly jumps into pink noise, and needs to be switched off in order to get it back to normal. It seems Mojo really doesn’t like upsampling.

Is there any chance your computer was sending out upsampled audio data?

 

[vandung2510]

I’ve had that happen when using Mojo with upsampling in Audirvana. It plays alright for a while and then suddenly jumps into pink noise, and needs to be switched off in order to get it back to normal. It seems Mojo really doesn’t like upsampling.

Is there any chance your computer was sending out upsampled audio data?

Yeah that sounds exactly like my symptoms. I'd need to turn the Mojo off and on again. Upsampled data, i dont know. But i was using youtube on Chrome at the time