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Android phones and USB DACs - Page 316

post #4726 of 6518

In the meantime, we could analyse your Geek Out-S4 dmesg output log file,

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/60#post_8428180

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1395#post_9069866

 

and the USB descriptors of the Geek Out using USB View.

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2025#post_9320708

 

The analysis could be proceeded as following: compare a dmesg output issued from a successful Android device - USB DAC interworking (i.e. S4 - FiiO E18 dmesg output) to a bugged dmesg output (i.e. S4 - Geek Out dmesg output).

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/75#post_8469751

 

The USB errors of a dmesg output are listed at the following links:

http://www.kneuro.net/cgi-bin/lxr/http/source/include/asm-arm/errno.h

http://www.mjmwired.net/kernel/Documentation/usb/error-codes.txt

http://www-numi.fnal.gov/offline_software/srt_public_context/WebDocs/Errors/unix_system_errors.html

http://www.kneuro.net/cgi-bin/lxr/http/source/include/linux/usb.h?a=mips#L427

 

 

It's weird because the Geek Out 1000 can work with a S5 or a Note3 without using a USB hub.

post #4727 of 6518

Managed to obtain both dmesg and logcat txt files. recording both E18 and Geek connections.

 

 

 

at first I connected the FiiO E18 DAC, activated UAPP - success; then I connected the Geek Out, activated UAPP - failed to initialize USB device

 

I have the files (for some reason I cannot attach it here)

 

Can someone advice?

 

Thanks


Edited by zolom - 5/15/14 at 10:50pm
post #4728 of 6518

Please send them to me by PM. I will publish them.

Do you also have the USB descriptors of the Geek Out?

 

Edit: You could also get the log files using the stock music player instead of UAPP, because the S4 can work with the FiiO E18 without using UAPP, and the Geek Out can work with the Galaxy Note3 without using UAPP.


Edited by DanBa - 5/16/14 at 12:06am
post #4729 of 6518

Thanks for your support

 

The logs with UASPP can be accessed here: https://dl.dropboxusercontent.com/u/13704932/DAC%20logs.zip

 

 

Logs with Native player (no UAPP) https://dl.dropboxusercontent.com/u/13704932/DAC_LOG-no%20UAPP.zip

 

 

Hope I did it right.


Edited by zolom - 5/16/14 at 2:05am
post #4730 of 6518

Hi everybody, 

I would simply ask if anyone has managed to run the Nexus 5 with the HifimeDIY, 

i'm really interested to get this model of DAC:

 

http://hifimediy.com/index.php?route=product/product&path=62_73&product_id=83

 

but I really don't know if at the current state this is possible, of course I will

take the OTG cable that sells the official site.

Thanks in advance for any reply!

post #4731 of 6518
Quote:
Originally Posted by SV_huMMer View Post
 

 

I don't quite understand your logic.

 

MP3 aside, can you please specify what types of music files did you try to play? I.e. did you test higher resolution music files with BD/SR above 16bit/44.1kHz?

 

And finally, why do you conclude that Touch 5G has the best USB Audio implementation by claiming that its internal DAC/Amp is the best?

 

I don't argue this statement about internal DAC/Amp, all I am saying that the internal DAC/Amp have absolutely nothing to do with USB audio implementation, as they are totally bypassed...

 

And then, we're left with all the stupid Apple things like no SD card support, iTunes nightmare to put music into the device, etc.

 

There have to be very solid reasons to claim iPod has the best USB Audio implementation... Oh, and can you please also tell us what current allowance does the iPod touch have, when you connect an external device to it?

For the most part, I've found my iPad to have clearly better USB audio implementation than any phone (Samsung, LG) I've had.  It always works, every time, even with my Bel Canto C5i speaker setup.  And jailbreaking has allowed me to bypass iTunes completely by putting all of my audio files in a folder I created.  But let's be clear, it's still no where near as versatile as my Android phone.  The interface will never be as customized to my liking.  The number of decent audio players is much higher on Android.  Even jailbroken, I need apps that can point to source folders (thankfully iOS Neutron player works.)  And no jailbreak hack can add an SD slot.

post #4732 of 6518

My portable set up is Galaxy Note III -> Fiio E07K -> HF5

 

My home set up is Windows 7 laptop -> Emotiva XDA-2 -> Denon amp / LDI+

 

My laptop is currently out of commission, awaiting a new heat-sink fan, so I tried to use my phone and its OTG cable to go into the XDA-2 but it does not work (some sound comes but it is incredibly distorted and piecemeal.) Not the end of the world, but I'm curious to know why this happens. Is it a drivers issue?


Edited by Brian_the_King - 5/16/14 at 1:55pm
post #4733 of 6518
Quote:
Originally Posted by Brian_the_King View Post
 

My portable set up is Galaxy Note III -> Fiio E07K -> HF5

 

My home set up is Windows 7 laptop -> Emotiva XDA-2 -> Denon amp / LDI+

 

My laptop is currently out of commission, awaiting a new heat-sink fan, so I tried to use my phone and its OTG cable to go into the XDA-2 but it does not work (some sound comes but it is incredibly distorted and piecemeal.) Not the end of the world, but I'm curious to know why this happens. Is it a drivers issue?

 

I think what's happening is the dac is taking too much amperage from the phone and that's why it comes out distorted. I tested a Xonar U3 with an android phone and a Nexus 7 V.2 and some comes out distorted and and crackling.

 

I've just purchased a HRT Microstreamer and it's meant to take less draw from the phone.

 

Don't believe it's a driver or software interface issue as I purchased USB Audio Player in the app store and it still crackles despite whatever buffer settings or error implementation. More of a hardware issue.

 

Someone else will be able to clarify it better than me perhaps as I don't have much experience with this.

post #4734 of 6518
@ DanBa

First things first, great explanation you gave me there, exactly what I wanted to know.

Problem now is to decide if it is worth investing into "UAAP" or waiting the few remaining week's until Android KITKAT 4.4 gets officially rolled out and the problem with the dragonfly is probably fixed or not...

Would be silly to invest some money into something you won't need after the 4.4 Update.


Thank you again for taking some time and clearing thing out for me!:-)
post #4735 of 6518
Quote:
Originally Posted by AnakChan View Post
 

 

May I ask if you use UAPP & the standard CLAS-supplied USB (OTG?) cable? The reason being is that I'm having a PITA trying to get that to work and I don't want to buy UAPP yet before ensuring this combination works reliably.

 

The trial is simply too short (either 20 min limitation or play tracks limitation) so I can't even evaluate the SQ coming out of UAPP as most of the time is fiddling to get it to work.

 

The maker has mentioned I can simply uninstall/reinstall to reset the trial but I'm losing patience and more detrimentally doesn't instill confidence in the product (for me at least).


I have also had issues with OTG cables and have yet to find one that works consistently and over time....Most start well, develop quirks and then refuses to work at al. Someone should make a GOOD, short reliable cable...Someone like Audioquest.

post #4736 of 6518
Quote:
Originally Posted by James1776 View Post
 


I have also had issues with OTG cables and have yet to find one that works consistently and over time....Most start well, develop quirks and then refuses to work at al. Someone should make a GOOD, short reliable cable...Someone like Audioquest.

 

I'd be willing to pay $30 to $40 for a 0.5m Forest micro USB to USB-B (large square) cable just to get rid of cable clutter with the OTG adapter. The cheapest alternative I've seen somewhere was a $70 custom job plus shipping (local AQ dealer near where I work), and at least with the AQ warranty exchange will be easier if they're broken out of the box.


Edited by ProtegeManiac - 5/17/14 at 9:42am
post #4737 of 6518

I would also go $30-40 for a quality OTG cable, but I need one that ends in a regular USB female (to connect to my Dragonfly) and it needs be Very short, as in 3-4 inches...better would be a simple adapter, USB micro OTG to USB female...something that could be directly connected to the phone (with a case in place) and then to the dragonfly or similar DAC.

 

Another pet peeve...I am finding the quality of the USB outlet on phones and tablets increasingly cheesy...My wife has a new (4 months) Toshiba tablet and the charging connection already looks like it has been through a war I fear it might not last the year. As we increasingly use this outlet we need one that can take the continual use without anything breaking of bending.

post #4738 of 6518

Been using some pretty normal USB-OTG Cable myself for the last half year.

So far it didn't have anything to regret, it was about 10ish Dollars although i could have probably get the same cable for half the price on the interwebs :)

 

 

 

 

I have yet to see a "high-quality" cable whatever that means :)

post #4739 of 6518
I've been using a $5.60 StarTech OTG cable for some months now.
No issues to report although I try to take very good care of it as the wire gauge in particular does not seem to be overly robust looking.
I too would pay more for a higher quality more obviously durable OTG cable, the very application means the wire will be subjected to more wear and tear than a stay at home cable would.
post #4740 of 6518
Forza audio works makes one killer OTG cable for under 80.00 usd.
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