Does MI2 support USB DAC?


Feb 26, 2013
347
100
65
#2
Anybody tried MI2 with USB DAC like Fiio E17, ODAC, ...?
Does MI2 support USB DAC like Samsung Galaxy S3, Note2, HTC One, ... ?
thangcoo

According to this document (http://developer.android.com/guide/topics/connectivity/usb/index.html) devices with Android 2.3.4 already support this protocol but it's very clear that if had some limitation it's about hardware related.

I use an Grado RA1 amplifier (http://www.gradolabs.com/page_headphones.php?item=7882e729321fad6256d8d77c0629dbb4) but it's analog, so I don't depend of protocols and hardware limitations.
 
Jan 28, 2013
13
1
13
#3
thangcoo

According to this document (http://developer.android.com/guide/topics/connectivity/usb/index.html) devices with Android 2.3.4 already support this protocol but it's very clear that if had some limitation it's about hardware related.

I use an Grado RA1 amplifier (http://www.gradolabs.com/page_headphones.php?item=7882e729321fad6256d8d77c0629dbb4) but it's analog, so I don't depend of protocols and hardware limitations.
Thank for your info, the 3.5mm output of MI2 is not good imo, so I'm thinking about upgrading by external dac.
MI2 supports OTG but as the info in the topic on head-fi, not all android phones natively support USB DAC, it requires kernel to support this feature, Samsung, HTC, Sony implemeted on their flagships, do not know about Xiaomi.
 
Jan 28, 2013
13
1
13
#5
I've tested MI2 with ODAC and DACport LX, and none of them can work with Xiaomi MI2 via USB Audio Recorder Pro. So we can't upgrade the audio quality of the great MI2

Update on Oct 26:
- Stoner Acoustics UD110 does not work with MI2 because of its new USB Receiver.

Update on Aug. 22:
- I've retried MI2 with iBasso D4, and it worked with USB Audio Recorder Pro.
- DACport LX can work with MI2 too, but only when I supply it with external power.
 
Last edited:
Jul 19, 2013
122
13
30
#10
I have Fiio E17, I guess it is supported as I do get improved and louder sound output.
If it works for you, the sound will not come out from the speaker, instead will come out from the line out of your E17.
Unlike mine, when I plugged UD110v2 via OTG to the phone, sound still comes out from the phone speaker :(
But using the app seems to bypass this.
 
Apr 11, 2013
55
18
20
#11
M1cha

I think we would really appreciate your help her with the drivers.
AS i see there are many users that interested in USB DAC :)
If you will have some spare time i would like to help with everything related to the drivers, i found recently the drivers for USB DAC from Galaxy S3 that natively supports it.
 
Apr 11, 2013
55
18
20
#13
Hi M1cha,

Thanks for answering, i really appreciate it!
Here and Here you have the drivers from Samsung Galaxy S3.
Here you have the USB audio source code.
Here is a topic of a guy that wrote the USB audio driver for his Ainol 7 tab. It also have a Link to the drivers he used.
Here is a page from google that reminds USB_CLASS_AUDIO.
And Here is a topic on Head-Fi forum that talks about Android and USB DAC and how Great it is.

Thanks for your efforts! Hope it will be possible, and Thank You for making our great device even more attractive!
 
Likes: M1cha
Apr 11, 2013
55
18
20
#14
BTW, i have managed to get my PCM2704 based USB DAC to work with USB Audio Player playing FLAC files and i have to say, The sound is AMAZING! the issue is that USB Audio Player has built in drivers.... The point is to make this work "out of the box" like other SOny or Samsung devices.
I recently spoke with redmaner about this to include in his kernel but apparently those USB Audio drivers already included in, and it's not working straightly :(...

Hope you will make it work :)
 
May 29, 2011
1,747
2,839
297
#15
It looks like all the guys who implemented usb dac didn't publish their kernel sources.
I can't believe that there are non-manufacturers doing that.
 
Jul 19, 2013
122
13
30
#18
I have a usb dac and its specification written is:


I have talked to the other user who has a working usb dac setup (similar usb dac with mine) on his nexus 7 tablet.
He said he is using this setup:
Zel's CM11 http://forum.xda-developers.com/showthread.php?t=2546065
Kangaroo kernel http://forum.xda-developers.com/showthread.php?t=2558717
He claimed that with this setup, hotplugging and volume control works.

I am not so sure about this.
He doesn't mention that he used this, but he attached these links for my reference.
http://forum.xda-developers.com/showthread.php?t=2029728
http://mehrvarz.github.io/nexus-7-usbrom/

I hope it helps.
 
Apr 11, 2013
55
18
20
#19
Never thought that people would cheap on opensource....
The most sad thing about it is the meaning of "OPENsource".
M1cha thank you for your efforts, holding fingers together...
 
Sep 19, 2013
21
3
13
#22
What kind of DAC implement the Mi2S anyway? Does anyone know?

Can't find any info on that

Edit: It is the integrated dac of S600 obviously... :rolleyes:
 
Last edited:
Apr 11, 2013
55
18
20
#23
Hi guys.

I got this cheap DAC from DX with controls (image attached), my goal is to make an "One Cable Solution" in my car, so i can connect one usb cable to the phone that will charge it and connect the DAC and the controls.
So here is the interesting part... The control WORKS without any manipulations or special kernels!
Basicly it mean that MIUI already has USB DAC support, the problem is that it doesn't route the audio to the DAC.
We need some help from the very appreciated DEVS here...
 

Attachments

Feb 15, 2012
23
1
13
#24
I'll try find a way to enable usb dac.
hi M1cha, did you manage to get USB DAC work on cm11? i'd like to be sure before buy a FiiO E18

Hi guys.
my goal is to make an "One Cable Solution" in my car, so i can connect one usb cable to the phone that will charge it and connect the DAC and the controls.
I was wondering to do the same, have you done it? did you use some special 3 ways usb cable or what?
 
Jun 4, 2013
266
42
62
#25
Have there been any updates since the last reply? Does MIUI v6 change anything? I'm also interested in a USB DAC, so I can output my Mi2s to my Denon amp. Thanks!