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Android phones and USB DACs - Page 207

post #3091 of 5381

Thanks for the clarification guys.  I incorrectly interpreted the functionality of that y cable.  My main purpose for getting it was to allow the phone to charge while simultaneously connected to an external DAC.  Unfortunately, that doesn't work.


Edited by nnotis - 9/10/13 at 3:33pm
post #3092 of 5381

I am in the same boat with the Sprint LG e970 Optimus G.  I bought a standard HiFimeDIY Sabre UAE23 DAC from here:

 

http://www.ebay.com/itm/130952688627?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

 

I did not have the OTG on-hand when I recieved it so I cannibalized an old HTC charging cable and a 1 amp garmin hard wired power supply in my mini cooper to create a charging/usb host cable.  I shorted pin 5 and 4 to create the cable.  I was ultimately unsuccessful.  I learned the following on the way though.

 

I started with a standard innergie dual usb charger:

 

http://lesterchan.net/blog/2012/09/10/innergie-usb-charger-10w-dual-usb-auto-adapter/

 

This proved to be a pain because I was tinkering and figured out some interesting items using it.

 

1.  The charger does not provide voltage unless one of the data lines is grounded or the data lines are connected to the phone.  I initially thought that the charger may have been interfering with the comms lines and this is how I discovered this.

 

2.  With the DAC powered by the charger there was not enough power on the lines to even have the phone attempt to draw power from the cable.  I do not know if this is because I have the optical model.

 

With the cigarette lighter USB charger removed and the garmin 1 amp supply there was no question about the 5vdc supply.  It is on all the time.  I therefore did not have to fiddle with the data lines.  There was still a problem with adequate power supply and the phone was only charging in an extremely slow fashion.  In fact with the display on the power supply was unable to sustain the operation of the phone.  

 

I have since ordered a 2 amp supply to replace the garmin.  I am hoping this is sufficient.  

 

Back to the Sabre/Optimus compatibility.  

 

When I connect the cable with power to satisfy the DAC requirements there is no indication of any type of communications indicated on the led.  When using the standard music app on the phone the audio is still directed to the speaker.  I therefore thought that there must be something I missed.  I assumed my internet searches for information must have been lacking something since I was turning up dead ends.  I have reverted to the trial and error method of random downloads at this point.  

 

I rooted my phone and installed the usb otg helper app.  I thought I might need to use this to unlock the capability of the port or something.  Still nothing.

 

I ended up ordering an otg cable with a female USB (host side) to test the device with a keyboard or usb stick.  If that works I guess I will try a new cable.

 

I guess my biggest question is, Is there generally support in the android OS for these types of devices?  My end goal is to be able to use Pandora in my car using the phone with the DAC.  The headphone jack on these phones is terrible and induces a lot of noise on the line.  It is also a pain because I want to just dock my phone when i get in my car.  I do not want to put the phone in the dock and plug in a 3.5 mm cable every time.

 

Currently I am using a proclipusa.com phone holder and it is awesome.  I want to add the micro usb port to a plate on the bottom so that the phone just slides in and off you go.

 

I don't know if this is ever going to work.  I am trying not to give up on it.  I know there is at least one other idiot out there that wants to do the same thing as me....or am I a lone-idiot on this one.

 

Art

post #3093 of 5381
Quote:
Originally Posted by acvtre View Post
 

 

Gosh, I'm sorry, however thank you so much for your reply. And about mini headphone amp in general, what would you suggest?

If you're asking about the AMP (not the DAC/Amp combo), I really like the sound of RSA amps. I own a Predator (it's a DAC/Amp), but Ray also offers amps only: The Hornet (http://www.raysamuelsaudio.com/products/hornet), The Tomahawk http://www.raysamuelsaudio.com/products/tomahawk and a few more).  They are noticeably on the "dark" and "warm" side of things though, so if this is not your cup of tea - look elswhere. To my taste, RSAs easily better similar iBasso products, but everyone's taste is different. 

 

Another great option to consider is HeadAmp Pico family. http://www.headamp.com/pico/pico_amp/index.htm I haven't owned one, but quickly auditioned once. Great sound, lighter and more open than RSA, but as a consequence a little less "substantial". I heard only the original Pico, they offer the Pico Power now, which is reported to sound noticeably better.

 

With no offence ment, I am personally not a great fan of FiiO sound. I admit they make some really great products for the price, but other amps simply sound more to my liking.

 

I hope my suggestions fit your definition of "mini" -)

post #3094 of 5381
Quote:
Originally Posted by aduhaime2003 View Post
 

...snip snip...

I'm really interested in your experience with the hifimediy dac, since I'm considering to buy the one with the headphone out LINK. Keep us updated.

 

Quote:
Originally Posted by SV_huMMer View Post
 

If you're asking about the AMP (not the DAC/Amp combo), I really like the sound of RSA amps. I own a Predator (it's a DAC/Amp), but Ray also offers amps only: The Hornet (http://www.raysamuelsaudio.com/products/hornet), The Tomahawk http://www.raysamuelsaudio.com/products/tomahawk and a few more).  They are noticeably on the "dark" and "warm" side of things though, so if this is not your cup of tea - look elswhere. To my taste, RSAs easily better similar iBasso products, but everyone's taste is different. 

 

Another great option to consider is HeadAmp Pico family. http://www.headamp.com/pico/pico_amp/index.htm I haven't owned one, but quickly auditioned once. Great sound, lighter and more open than RSA, but as a consequence a little less "substantial". I heard only the original Pico, they offer the Pico Power now, which is reported to sound noticeably better.

 

With no offence ment, I am personally not a great fan of FiiO sound. I admit they make some really great products for the price, but other amps simply sound more to my liking.

 

I hope my suggestions fit your definition of "mini" -)

 

Thank you. I'm sure these amps are great but really out of my budget.

post #3095 of 5381
Quote:
Originally Posted by acvtre View Post
 

I'm really interested in your experience with the hifimediy dac, since I'm considering to buy the one with the headphone out LINK. Keep us updated.

 

I bought that same one and it should be here this week so I'll let you know. I'll be using it with my 2012 Nexus 7, 2013 Nexus 7, and Galaxy S2 (SPH-D710) though I'm 99.9% sure it won't work with the S2.

post #3096 of 5381

Android device & upcoming Light Harmonic GEEK:

http://www.kickstarter.com/projects/gavn8r/geek-a-new-usb-awesomifier-for-headphones/posts/593283#comments

 

"Android compatibility anyone?  No need for external power!  Larry estimates 12 hours of high resolution music enjoyment on a single battery charge.  Wouldn't it be great if Apple would let us do the same thing with iDevices? :)"

 

Galaxy S3 > USB audio out >> USB OTG cable adapter >> Light Harmonic GEEK USB DAC/amp >> headphones

 

 

 

 

post #3097 of 5381

Awesome news on the Geek.

post #3098 of 5381
Quote:
Originally Posted by DanBa View Post
 

Android device & upcoming Light Harmonic GEEK:

http://www.kickstarter.com/projects/gavn8r/geek-a-new-usb-awesomifier-for-headphones/posts/593283#comments

 

"Android compatibility anyone?  No need for external power!  Larry estimates 12 hours of high resolution music enjoyment on a single battery charge.  Wouldn't it be great if Apple would let us do the same thing with iDevices? :)"

 

Galaxy S3 > USB audio out >> USB OTG cable adapter >> Light Harmonic GEEK USB DAC/amp >> headphones

 

 

 

 

I saw this too and am very excited, however I would like them to clarify the high def part of it.  Most if not all programs downsample any hi res files to 16/44.  I think it has to do with the Android OS.  I use Poweramp and while it reports my hi res songs as 24/96, my DAC is telling me it is playing only at 16/44.  UARP is the only way for now to get bitperfect out of an android device.  I have a NOTE II, which has a near identical USB audio implementation as the GS3.  

 

I'd like to be wrong, though at the moment it doesn't matter as long as the sound comes out and it sounds good since I have very little hi res music.  At any rate, I have a GEEK ordered and will report back next year when I receive it.

post #3099 of 5381

Just downloaded a 32bit 384Khz wav test file from this page:  http://www.msbtech.com/support/supportHome.php

(middle part of page, right side)

 

USB Recorder Pro recognizes only 24bit 384Khz on Sony Xperia Z with M2tech Hiface Dac.

 

But hey! No complaints....:wink_face:

 

 

post #3100 of 5381
Quote:
Originally Posted by CZ Eddie View Post

I don't follow the thread any longer, so I'm sure it's already been mentioned.  But in case it hasn't, my AT&T Galaxy S4 with AOSP Slim Bean 4.3 beta 5 is working great with my Behringer DAC.
Slim Bean is my favorite AOSP ROM.  That and Liquid Smooth which is based on Slim.

Holy Hell Yes

I loaded this rom on my AT&T S4 last night and it is all the rom I could have asked for! It is loaded with all the features, looks great, and drives either a USB DAC or headphones from the usual output port as well!! (jacknorris's patch did get me pretty much to this point before, but the regular headphones port didn't work...)

I've literally been wanting to drive a USB DAC with a portable device for like 5 years+, and now it's here! Thanks for the heads up, CZ Eddie.
post #3101 of 5381

 

Quote:
Originally Posted by FraGGleR View Post
 

I saw this too and am very excited, however I would like them to clarify the high def part of it.  Most if not all programs downsample any hi res files to 16/44.  I think it has to do with the Android OS.  I use Poweramp and while it reports my hi res songs as 24/96, my DAC is telling me it is playing only at 16/44.  UARP is the only way for now to get bitperfect out of an android device.  I have a NOTE II, which has a near identical USB audio implementation as the GS3.  

 

I'd like to be wrong, though at the moment it doesn't matter as long as the sound comes out and it sounds good since I have very little hi res music.  At any rate, I have a GEEK ordered and will report back next year when I receive it.

 

USB audio is not yet implemented by Google.

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2625#post_9614979

 

Google can’t put limitation on something they don’t implement.

 

As Android is free and open source, Android device manufacturers (Samsung, HTC, Sony, LG and some others) modify the Android OS and implement their own USB Audio by leveraging on the free and open source 32/384-capable Linux USB audio driver for ALSA.

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2985#post_9762071

 

So far, these Android code modifications are limited, and the generic music players have to use the current Android media player framework having some code instructions which prevent the usage of 24-bit audio format like

 

if( ! (audioFormat->format == AUDIO_S8 || audioFormat->format == AUDIO_S16) )

 __android_log_print(ANDROID_LOG_ERROR, "libSDL", "Application requested unsupported audio format - only S8 and S16 are supported");

 

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1005#post_8950416

 

 

LG will carry out some more modifications

 

 

 

 

 

 as well as Samsung.

 

CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90

 

CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90

 

 

eXtream Software Development has chosen another way, playback music player directly interfacing to USB audio soft-driver, so that their USB Audio Recorder PRO is able to playback hi-res music on stock USB host-featured Android devices.

 

 

 

 


Edited by DanBa - 9/13/13 at 1:38am
post #3102 of 5381

FiiO E07K works with the Note 2 after turning off USB charging on the Fiio:

http://www.head-fi.org/t/638910/fiio-e07k-andes-review-and-help-thread/960#post_9799318

post #3103 of 5381

I was hoping, if I may, to move the evolution of this conversation back a few millennia by asking : How do I get music tracks into USB Audio Recorder Pro?  I`ve got everything set up : HTC Butterfly, OTG cable to new D-Zero SE (sabre DAC) and of course USB A.R.P installed and looking very professional. But I can`t seem to access any of the files on my SD card . . .   

 

I`m sure I`m doing something utterly infantiley wrong.  

 

h  e  l  p      m  e    p  l  e  a  s  e   .   .    .     .      .   

post #3104 of 5381
Quote:
Originally Posted by Dopaminer View Post
 

I was hoping, if I may, to move the evolution of this conversation back a few millennia by asking : How do I get music tracks into USB Audio Recorder Pro?  I`ve got everything set up : HTC Butterfly, OTG cable to new D-Zero SE (sabre DAC) and of course USB A.R.P installed and looking very professional. But I can`t seem to access any of the files on my SD card . . .   

 

I`m sure I`m doing something utterly infantiley wrong.  

 

h  e  l  p      m  e    p  l  e  a  s  e   .   .    .     .      .   

 

Are your music files FLAC?

post #3105 of 5381

I finally got USB Audio Recorder Pro working on my Note II again.  A VERY pleasant discovery is that UARP has hardware control over the volume control of the HRT Microstreamer.  What this means is that there isn't the hiss that I get using the MS on the Note II without UARP (amp is at full volume, with digital attenuation - bad!).   Unfortunately, there is a clicking that occurs every few seconds that is mildly distracting.

 

I also decided to go from FLAC to mp3 for my portable music collection to conserve space, forgetting that UARP doesn't do mp3.  DOH!

 

On a side note, it is too bad that something like Pandora can't be routed through UARP.  I listen to it quite a bit, and the main DAC that I will be using (HifiM8) won't work with the Note II without UARP.

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