[lofthanza]

No i dont. Is there a way to tell? Anyway, if i plug it to a charger, then it charges the phone, i should not use it. I should use it only if it doesnt charge the phone, am i right?

And thanx a million for your help!

 

[StanD]

No i dont. Is there a way to tell? Anyway, if i plug it to a charger, then it charges the phone, i should not use it. I should use it only if it doesnt charge the phone, am i right?

And thanx a million for your help!

I haven't used the GS3 in quite some time as I upgraded to a Note 3 some time ago, so I can't remember the exact details. I was using my Y cable with a desktop DAC which drew power from the Y cable rather tahan he phone. I'm not sure but I believe it didn't charge the phone when connected to the DAC.

 

[Coop]

This is new to me. The phone isnt supposed to be charging while connected through an otg cable. Could u plz gimme a link to one of those. I just dont wanna make a mistake. And thank u!

 
Well... That depends... 1 little 69.4K Ohm resistor makes all the difference
 
On a regular OTG cable, pin 4 (ID) is bridged to pin 5 (Ground) at the A-side connector. (I say A-side as many manufacturers use a B-type receptacle on the device, which is correct for regular USB, but contradicts the standards for OTG, but that's another discussion).
On certain Samsung models (I don't know which, but it worked on my GT-I9305), you can trigger "dockmode", which allows simultaneous OTG usage and charging. The dockmode is triggered when pin 4 and 5 are bridged over a 69.4K Ohm resistor, and power is provided from the cable when inserted.
 
So with a cable like that, the correct order of connection is:
1. Power source (as power has to be present for dockmode to trigger)
2. Phone
3. USB device (such as DAC)

 

[RAFA]

No i dont. Is there a way to tell? Anyway, if i plug it to a charger, then it charges the phone, i should not use it. I should use it only if it doesnt charge the phone, am i right?

And thanx a million for your help!

 
Damn.
 
Ur avatar pic.

 

[StanD]

No i dont. Is there a way to tell? Anyway, if i plug it to a charger, then it charges the phone, i should not use it. I should use it only if it doesnt charge the phone, am i right?

And thanx a million for your help!

I dug up my Galaxy S3 and tried both of my Y cables. One has a male Type A for Y power that can connect to a USB wall wart or Laptop, the other has a micro B female that would accept the Micro B ended cable that one would use to charge their phone. In both cases I followed the below procedure in order:
1) Plug the power into the correct Y end of cable.
2) Connect the female end of the OTG to the USB Type A cable that goes to the desktop DAC. I  used a Schiit Bifrost Uber USB2 that originally fried my same model phone, Galaxy S3.
3) Connect the OTG Micro B male to the phone,
 
Both cables worked, The DAC produced music and the phone was charging. A double win.

 

[DanBa]

DACport HD: 384kHz / DSD High-Res music finally affordable
https://www.indiegogo.com/projects/dacport-hd-high-res-music-finally-affordable#/story
https://www.facebook.com/photo.php?fbid=10152979659598233
 
"It's actually made for laptops. But some androids work well. The real highlight of DACport HD is the ability to drive any headphones."
 
 

 

 

 

 

[seeteeyou]

That's like really a nice rig with Android Wear Smartwatch, Stick PC running Android 4.4, DACport HD, and 5V/2A power bank
 
Walkman update (8.5.A.3.2) – view songs in your playlist on Android Wear
http://www.xperiablog.net/2015/03/13/walkman-update-8-5-a-3-2-view-songs-in-your-playlist-on-android-wear/
http://forum.xda-developers.com/moto-x/themes-apps/apk-sony-walkman-apk-t2992754
http://forum.xda-developers.com/galaxy-s3/themes-apps/app-t3050715
http://forum.xda-developers.com/crossdevice-dev/sony/share-xperia-home-v8-0-0-9-t3092518
http://forum.xda-developers.com/xperia-z2/themes-apps/app-xperia-music-app-beta-walkman-icon-t3094114
 

---

 
Android 4.4 on $100 MeeGoPad T01 Stick PC
 
https://plus.google.com/+IanMORRISON/posts/8PJdZFRCybn
https://docs.google.com/document/d/1Cp8PHEmNrlDufVoDpeEqNEdGWJi_cZ_Mo6VC7QDeN8s
 
http://youtu.be/U8zgRg8aVts

 

---

 
Something like this could be useful as well, depending on the location of the USB port or the OTG port
 
http://item.taobao.com/item.htm?id=43363683431
 

 
http://item.taobao.com/item.htm?id=36240712210
 

 
http://item.taobao.com/item.htm?id=15840769093
 

 

 

[lofthanza]

Well... That depends... 1 little 69.4K Ohm resistor makes all the difference

On a regular OTG cable, pin 4 (ID) is bridged to pin 5 (Ground) at the A-side connector. (I say A-side as many manufacturers use a B-type receptacle on the device, which is correct for regular USB, but contradicts the standards for OTG, but that's another discussion).
On certain Samsung models (I don't know which, but it worked on my GT-I9305), you can trigger "dockmode", which allows simultaneous OTG usage and charging. The dockmode is triggered when pin 4 and 5 are bridged over a 69.4K Ohm resistor, and power is provided from the cable when inserted.

So with a cable like that, the correct order of connection is:
1. Power source (as power has to be present for dockmode to trigger)
2. Phone
3. USB device (such as DAC)

I dug up my Galaxy S3 and tried both of my Y cables. One has a male Type A for Y power that can connect to a USB wall wart or Laptop, the other has a micro B female that would accept the Micro B ended cable that one would use to charge their phone. In both cases I followed the below procedure in order:
1) Plug the power into the correct Y end of cable.
2) Connect the female end of the OTG to the USB Type A cable that goes to the desktop DAC. I  used a Schiit Bifrost Uber USB2 that originally fried my same model phone, Galaxy S3.
3) Connect the OTG Micro B male to the phone,

Both cables worked, The DAC produced music and the phone was charging. A double win.

Thank u indeed! That helped very much.

 

[jjacq]

Never thought I'll be back to this thread again. I was wondering if you guys have any recommendation for a DAC that is proven to work with the HTC One M7 that I can use with my Cayin C5 and LCD-X. I know you guys will probably hate me for this but I'm mainly concerned of using this setup for Spotify. It's different from my portable rig but sometimes when I'm in my bed or around the house, I kinda wish I can use my X too with my M7 phone that is my Spotify DAP.
 
It does run a custom lollipop FW so I'm not too sure if it'll work well with any other DACs but I'm open to suggestions. I don't really have a budget but I do want it to be small enough that it won't bother me too much.
 
Actually I should've scrolled up first, thanks Danba.

 

[seeteeyou]

This Android Wear app looks promising
 
http://youtu.be/Emsi9v9gpYk

 
https://sites.google.com/site/barksideapps/wear-music-controller
https://play.google.com/store/apps/details?id=com.barkside.music
http://forum.xda-developers.com/android-wear/development/app-wear-music-controller-t2885289
 

---

 
However, song queue viewing and control might not work for many Android apps yet
 
https://sites.google.com/site/barksideapps/wear-music-controller/faq
 

Song queue viewing and control will work for only those players that publish that information - at the time of writing, only Google Play Music supports this, and only on Android version 5.0 and above.
 
Other music players may or may NOT work, so please check before purchasing the license.

 

[Hawaiibadboy]

 
Note 4>>>OTG DAC >>Cayin C5 amp

 

[lofthanza]

I dug up my Galaxy S3 and tried both of my Y cables. One has a male Type A for Y power that can connect to a USB wall wart or Laptop, the other has a micro B female that would accept the Micro B ended cable that one would use to charge their phone. In both cases I followed the below procedure in order:
1) Plug the power into the correct Y end of cable.
2) Connect the female end of the OTG to the USB Type A cable that goes to the desktop DAC. I  used a Schiit Bifrost Uber USB2 that originally fried my same model phone, Galaxy S3.
3) Connect the OTG Micro B male to the phone,

Both cables worked, The DAC produced music and the phone was charging. A double win.

Thank you very much! My galaxy s3 is working now.



Now to everybody, is the problem of phones frying limited to galaxy s3 or is it a problem that plagues all phones?

I need to know bcz I wanna use my tab s 8.4 but my experience with the galaxy s3 scares me. Plz some input, if you were me, would you try it anyway or would you not?

 

[StanD]

Thank you very much! My galaxy s3 is working now.



Now to everybody, is the problem of phones frying limited to galaxy s3 or is it a problem that plagues all phones?

I need to know bcz I wanna use my tab s 8.4 but my experience with the galaxy s3 scares me. Plz some input, if you were me, would you try it anyway or would you not?

My Galaxy Note 3 phone has no such problem, it works without a powered USB Hub on all of my DACs. My Nexus 7 (2013) LTE tablet using Andriod 5.1 works with an external DAC, no smoke.
To be safe with the GS3 I used a powered USB Hub that has a power switch and does not allow any power from the phone to be used, ever. Some Hubs draw from the source when there is no power source. Here's a link to that Hub.
http://www.amazon.com/Gear-Head-4-Port-Powered-UH5500ESP/dp/B004OBZ088

 

[REXNFX]

Hi Doc, I have the Z3c too, what's the best DAC you've found for it so far?

Testing Geek Out 450 and sharing some experiences in case useful for others.

There seemed to be relatively few reports on whether GO works different phones. Also, UAPP lists the compatibility as highly phone dependent.

-------------

Sony Xperia Z3 compact with stock Android 4.4.4. and UAPP/Spotify/Walkman/Tidal/Deezer --> USB-OTG-cable --> Geek Out 450 --> Amp:

Does not work. Either gives a "too much USB power draw" error or just fails to recognize the DAC and in any case GO does not produce any sound.

--------------

Sony Xperia Z3 compact with stock Android 4.4.4. and UAPP/Spotify/Walkman/Tidal/Deezer --> USB-OTG-Y-cable with additional power --> Geek Out 450 --> Amp:

Can be made to work but really tricky for UAPP:

1) You need to first connect the additional power to the GO (via the Y-cable), and only then gonnect the GO to the phone. Well, obviously, to work around the power requirement.

2) I cannot make it work with UAPP right away. The UAPP does ask permission to use the DAC (GO), but then produces slight crackling sound only or fails to initialize the DAC. I have tried all the UAPP USB tweaks, buffers etc. one by one and then all of them on and finally some combinations (although not all as there are quite many of those), but no luck so far.

However, the other players on my phone do work and produce the sound out of the GO if I start them before UAPP(!).

They do not work after trying UAPP. Spotify has volume control, the others not, and GO shows Spotify at 48kHz and the others at 44,1kHz. Guess the Spotify player is using the Android USB framework and the others somehow connecting directly via Sony specific drivers.

Here is where it gets tricky: It is possible to get the UAPP to work by the following procedure:
0) plug in the your headphones to the GO
1) plug in power to the GO
2) plug the GO to the phone
3) start Walkman and set a song playing (careful with your headphoes and ears as the GO output is at full volume!) and stop playback. Exit Walkman by back button but do not kill the Walkman application.
4) start UAPP and start playing a song. Typically the UAPP either does not ask permissions for the USB DAC or cannot initialize it. Go back from UAPP, confirming exiting UAPP.
5) start UAPP again, the USB dac permission is asked for, and the USB DAC is initialized.
6) hit play and start enjoying the music!

I have tested several shortcuts and variations to the above procedure but so far did not find one that works reliably.

Another oddity requiring the step 0) above is that if I plug or unplug the phones from the GO, the USB connection to the phone is often lost, and then its back to the crackling with the UAPP.

----------

Would appreciate your input if anyone has experience with Geek Out:

Has anybody been able to get the Geek Out to work with Sony Xperia Z series and UAPP without the need for the above procedure, and if so, what kind of tweaks to the phone or UAPP settings were needed?

Or with any phone with Android 4.x and UAPP, for that matter?

 

[Dr J]

Hi Doc, I have the Z3c too, what's the best DAC you've found for it so far?

 
Hi REXNFX, well, best depends on your intended usage and preferences, as usual.
 
My goal was to build one that is smallest possible but still high quality sound portable set for commuting and flights with IEMs. In addition, I wanted to build another transportable high quality sound set for office use where the size is not so critical but I am using orthos so a bit more robust amp is needed.
 
I selected the DACs and amps based on form factor and reading reviews on sound quality and experiences on whether the DACs work with Z3c, here and on other sites.
 
I have not really done any thorough side-by-side comparisons on the sound quality of DACs, so unfortunately cannot give you real information on that, except to say I am very happy with what I am hearing.
 
I went with ODAC for the portable set, together with Leckerton UHA-6S.MKII amp. JDS Labs can provide a very compact case ODAC if you ask them.
 
For the transportable set I re-used the CLAS-DB I had from my iPod-based set in my signature.
 
I also tested the Geek out 450 as you saw, and while it does sound very good and I would have no hesitation using it based on the sound quality, and it is a very compact dac+amp, there are the hiccups with using it. Also the fact that it gets really hot worries me if I were to use it in a portable set that is kept in a pocket or a pouch. Maybe the GO V2+ would be a good option, as early reports on its sound quality seem to be promising.
 
Incidentally, I assume Z3c can be made to work directly or via the Schiit Wyrd with also high end desktop DACs. I reported some experiences in this thread.
 
Hope this helps.