Android phones and USB DACs
Feb 12, 2013 at 4:08 PM Post #1,696 of 9,526
I noticed this has been asked but no answer yet.
 
Does the Galaxy Note 2 work with the Schiit MODI?
I was looking at getting this but may go with a portable for now.
 
For a second question as there is a huge list of options and I'm new to all this.
Which would be a good option for driving Hifiman HE-400's or Mr Speaker Mad Dog with Alpha Pads
Thanks for the help
 
Feb 12, 2013 at 5:54 PM Post #1,697 of 9,526
Quote:
Does anyone know if the E7 is a safer bet than the E07k?  Or...should I just go with the iBasso D-Zero?
 
Thanks again for your help.

 
E7 definitely works with the S3, used it with my US and International S3s. No idea whether it is better than than the D-Zero though.
 
Feb 12, 2013 at 6:31 PM Post #1,698 of 9,526
Quote:
I'm just wondering which Belkin hub you're using here? I've been advised to try different USB hubs in an effort to find one which provides clear digital audio signal out of tablet to Cambridge Audio DACMagic. Currently going direct from USB OTG to DAC via manufacturer (DAC's) provided USB cable results in a noisy audio signal. I figured your Belkin hub would be a good place to start auditioning for a working setup.
 
Will also be researching USB battery packs to provide power rather than relying on AC->DC adapter. I don't suppose anyone has an input on a 4 port USB Battery pack vs a 2 port USB Battery pack and whether the 4 port model is more likely to interfere with the digital audio signal going from the android device to the powered USB Hub to the USB DAC. Battery capacity, voltage, amps etc is identical for both models. For all I know the number of ports is irrelevant to electrical disturbance.
 
Thanks

 
 
My Belkin powered USB hub is the following:
http://www.amazon.com/Belkin-F5U404PBLK-USB-4-PORT-Mobile/dp/B002AESNUI/ref=pd_rhf_se_s_cp_3_EJAP
 
It was the smallest USB hub I found in the shop around the corner.
 
 
About electrical disturbance, a solution: USB Y cable?
http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=usb+y+cable&_sacat=0&_from=R40
http://www.6moons.com/audioreviews/kingrex12/1.html
https://www.facebook.com/notes/ifi-audio/ifi-gemini-dual-headed-usb-cable/483148201720927
 

 
“What’s wrong with the current USB cable design for audio use?
Many cables combine power and data into a single cable, causing crosstalk between power and data.
iFi Solution:
The key of course is the “twin connection” design. It separates the signal ground from power ground and shields the signal and power connections from each other."
 
 
The most constant voltage-regulated USB battery pack?
http://www.6moons.com/audioreviews/kingrex9/2.html
 
[size=10pt]"The battery supplies of the usual mobile equipment require a DC/DC converter to step up the required output voltage."[/size]
 

 
 
[size=10pt]"Our U Power's two 3.7V cells net 7.4V power which gets stepped down to the 5V with a superior low-noise linear voltage regulator."[/size]
 

 

 
"A typical linear regulator diagram is shown in Figure 1-1. A pass transistor is controlled by an operational amplifier which compares the output voltage to a reference. As the output voltage drops, the op-amp increases drive to the pass element, which increases output voltage. Conversely, if the output rises above the desired set point, the op amp reduces drive. These corrections are performed continuously with the reaction time limited only by the speed of the op amp and output transistor loop."
http://www.micrel.com/_PDF/other/LDOBk.pdf
 
Feb 12, 2013 at 6:39 PM Post #1,699 of 9,526
Quote:
 
Does anyone know if the E7 is a safer bet than the E07k?  Or...should I just go with the iBasso D-Zero?
 
Thanks again for your help.

 
 
There’s a 99.999% chance that a Galaxy Note 2 can interwork with the FiiO E7.
 
The following reviewer prefers the iBasso D-Zero:
http://www.headfonia.com/fiio-e7-meet-your-rival-the-ibasso-d-zero/
 
And a USB OTG cable is included in the box of the iBasso D-Zero.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1320#post_9044972
 
Feb 12, 2013 at 7:06 PM Post #1,701 of 9,526
Micro-A to Mini-B "Android USB OTG cable" from iBasso at £5:
http://www.head-fi.org/t/628374/samsung-galaxy-s3-to-dac-usb-micro-b-male-to-mini-b-male/45#post_9152990
 
 

 

 
Feb 12, 2013 at 7:15 PM Post #1,702 of 9,526
I've order several of those DanBa :)
 
Feb 13, 2013 at 4:29 AM Post #1,704 of 9,526
Feb 13, 2013 at 8:55 AM Post #1,705 of 9,526
Quote:
Micro-A to Mini-B "Android USB OTG cable" from iBasso at £5:
http://www.head-fi.org/t/628374/samsung-galaxy-s3-to-dac-usb-micro-b-male-to-mini-b-male/45#post_9152990
 
 
 
 

 

 
 

I NEED one of these. Will make my life a lot easier!
 
Feb 13, 2013 at 9:27 AM Post #1,706 of 9,526
so like one of the guys said yesterday (topic keeps getting ignored)...how do you get hot plugging functionality working on a Nexus 7 (grouper (wifi))???  It works only if you reboot the device with the DAC plugged in.
 
I've tried on ParanoidAndroidROM, LiquidSmoothROM, and now Dirty Rootbox ROM with multiple kernels (M-Kernel, Motley, Timurs)
 
Feb 13, 2013 at 9:55 AM Post #1,707 of 9,526
there was actually a link to a mod (that i have yet to try) that solves it on the last page
 
http://forum.xda-developers.com/showthread.php?s=67d6d18ebc93a1617203c54b76f87b5d&t=2029728
 
Feb 13, 2013 at 2:55 PM Post #1,708 of 9,526

Quote:
there was actually a link to a mod (that i have yet to try) that solves it on the last page
 
http://forum.xda-developers.com/showthread.php?s=67d6d18ebc93a1617203c54b76f87b5d&t=2029728

 
I know I post there under the same name (in that thread already mind you).  Already tried that. :frowning2:
 
Feb 13, 2013 at 5:29 PM Post #1,709 of 9,526
I have a stock, US version Samsung Galaxy s3 and an iBasso D-Zero. I know that these are 'compatible' with each other, as in I'll get that beautiful clean sound, but I don't know how to hook it up. Which cable do I use? Where does everything go? Once I connect it, will it work automatically, and I'll get the amazing sound, or do I need the USB Audio Recorder Pro app thing. And can I use this with Neutron Music Player? 
 
Thanks! 
 
Feb 13, 2013 at 7:05 PM Post #1,710 of 9,526
Quote:
I have a stock, US version Samsung Galaxy s3 and an iBasso D-Zero. I know that these are 'compatible' with each other, as in I'll get that beautiful clean sound, but I don't know how to hook it up. Which cable do I use? Where does everything go? Once I connect it, will it work automatically, and I'll get the amazing sound, or do I need the USB Audio Recorder Pro app thing. And can I use this with Neutron Music Player? 
 
Thanks! 

You need a USB OTG - 'On The Go' cable. They can be bought off ebay for a couple of dollars. You should be able to play music through Neutron with this amp.
 

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