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Android phones and USB DACs - Page 184

post #2746 of 5568
Quote:
Originally Posted by Raenmor View Post

There is nothing wrong with newbie questions, as long as you really want to learn something wink.gif

And before I start - it's impossible to ruin your system with linux deploy (probably you can, but you have to do it on purpose, and even then you will probably fail to do so)

Ok, now let's start
1)Run linux deploy, go into your profile and run menu-status. Look for the line "Support loop device", if it says "yes", then you can install linux into .img file, if no, you have to do it into directory (/data/linux/ will do fine)

2)About image size - with no GUI recommended minimum is 512mb, with GUI - 1024mb, maximum size on fat32 file system (which you probably have) is 4096mb. For our purpose 512 will do fine (I use the same)

3)go to settings in linux deploy, scroll down to "operating environment", tick "create symlink" and press "update env". It will ask for root permissions, grant it and wait for completion.

4)go to profile properties (once inside the profile - the button with arrow symbol on it)

5)Chose
distribution - debian,
suite - wheezy,
architecture - armhf (for newer phones, if you think that you phone is old and/or cheap one, it's safer to choose armel. It's about floating point calculations - software (armel), or hardware (armhf). Tegra 3 is doing fine with armhf, for others I can't say for sure. SoCs like S4 and similar should do fine, I think.)
Installation type - file (if you have loop device support), directory - if you don't
path - choose path for image file, or directory to install (/data/linux, as I already said, but be sure that you have enough free space on /data, at least 400+ mb)
Image size (if you're using image) - 512mb
Install GUI - uncheck
on startup group uncheck everything, except "SSH" and "custom mount" (you want access to your sdcard, right? biggrin.gif
)

6) scroll to the very top, and press "Install"

7) Wait...

8)after installation complete press start

9)download terminal emulator from market (run "su", and then "linuxdeploy shell" in it, now you're see your linux terminal), or use ssh client on your pc to control your linux (I prefer putty, i'ts nice and simple)

10)default root password should be "changeme", but for me it didn't work, so I had to change root pswd using terminal on the phone, and then connect from pc as root with new pswd.

11)after you connected as root to your linux you have to refresh you repos by running "apt-get update" command

12)install alsa-utils (apt-get alsa-utils) and mpd (apt-get mpd)

13)connect your DAC, run "aplay -l" and check, if alsa identified your card, also write down it's card number, subdevice and name (not the long one in "", but the short one before in capital letters)

14)run "sudo -e /etc/mpd.conf" (from your pc, 'cause from android it will be painful to use), and edit your mpd configuration file to send audio to your alsa device without alterations (you can read more here, but you need the part about mpd and alsa configuration only, ignore the rest). I've used bind_to_address "any", so I can connect from pc and from the phone itself to the mpd server, If you won't - you can bind it to "localhost".

15) download MPDroid from market, set server address in default connections as "localhost" (or 127.0.0.1) and you're good to go.

If you have any more questions - feel free to ask, but very basic ones (like "how to change root password" you can google yourself. From android terminal (using linuxdeploy shell) you're connected to linux as root anyway and can do anything you want)

And about wakelock - no, it wont eat your battery, as any music player enables it by default. MPDroid is not a player, it's a client, thus it doesn't use wakelock. That's why you have to turn it on manually.

Wow thats some steps, thanks man, 'll do today. Its always good to know people out there trying to develop sonething that's not perfect before.

Thanks for your help buddy. I 'll report back.

Regards
Jared
post #2747 of 5568

Ok so I have a quick question.

 

Galaxy S4 -> USB OTG -> Sabre Tiny DAC -> JDS C5 -> T-Peos H-200

 

Why am I able to change the volume from my Android device using PowerAmp? Is this considered true line out quality or is it the same as using the headphone out? Should I leave the volume on the Android device at 100% and control the volume through my amp?

 

post #2748 of 5568
Originally Posted by baydude View Post

Ok so I have a quick question.

 

Galaxy S4 -> USB OTG -> Sabre Tiny DAC -> JDS C5 -> T-Peos H-200

 

Why am I able to change the volume from my Android device using PowerAmp? Is this considered true line out quality or is it the same as using the headphone out? Should I leave the volume on the Android device at 100% and control the volume through my amp?

 

 

This is normal.. it's just like using WASAPI out w/ your PC and still being able to control the volume of the digital output.  keep your S4's volume at 100%.

post #2749 of 5568
Quote:
Originally Posted by DanBa View Post

NuForce Icon DAC Goes Straight to the (Android) Source

http://www.technologytell.com/hometech/98926/nuforce-icon-dac-for-android/

 

"NuForce has released a new addition to its line of DACs and headphone amps that should be of particular interest to you Android fans in the audience. The new Icon DAC not only features 32-bit digital-to-analog conversion for Macs and PCs, but also serves as an audiophile caliber DAC and headphone amp for phones and tablets running Android 4.1.1 or later with USB OTG Audio capabilities, including HTC ONE X, Samsung S3, SONY Xperia Z, and all newer versions of those devices.

Now that is good news. It solves a couple challenges on my PC setup and should work with my HTC One and Asus Transformer tablet (crosses fingers). Sweet! Thanks for the heads up.


Edited by AladdinSane - 7/29/13 at 11:09pm
post #2750 of 5568
Can someone please help me build a cart on amazon with what I need to use an amp / dac for my HTC one I'm not sure what usb otg cable to get or which dac amp to get, should I get the old e7 or the new e7k or whatever it is, I would like to keep the budget under 100$ if possible , if the sound quality won't be better I'm willing to spend a little more but not too much.

Thanks!

Sent from my HTC One using Tapatalk 2
post #2751 of 5568

Re: Help me find an amp /dac for my htc one please.

Also forgot to mention I use only iems. My collection consists of "hf3's, x10i's, re-400's, tdk ba-200's, ue500's, e10's, gr02 BE's, s4's".

Thanks :thumbup:

Sent from my HTC One using Tapatalk 2
post #2752 of 5568

I have been following this thread for a while and it seems to be a constantly evolving technology. I have an Xperia TL, and recently purchased a Clip Zip. Will Xperia>OTG>DAC/ provide a significantly better source for my E12 and modded T50RPs than the Clip Zip? I listen to FLAC CD rips. Thanks, satwilson
 

post #2753 of 5568

Update on Sola/USB OTG Power Consumption Error:

 

I think I have a faint clue as to why a cheap USB DAC inserted between Xperia Sola and a USB Device may solve the Power Consumption Error.

 

I checked Windows Device Manager properties/Power tab for USB devices connected to my laptop, and here are the findings:

 

1) A USB Flash Drive, that was rejected by Sola if plugged straight into the OTG cable:

 

 

I know it's cyrillic, but the highlighted item is Mass Storage Device, and it claims it needs 500mA. 

 

2) Another USB Flash drive, that was accepted and mounted by Sola, plugged directly to USB OTG:

 

 

As you can see, the USB Mass Storage Device claims it needs only 200mA!!! Which means that Sola is willing to provide 200mA, but not 500mA. I guess the threshold is somewhere between these two values, but I have no way to tell the exact value.

 

3) RSA Predator - rejected by Sola if plugged directly into USB OTG:

 

 

The highlighted item says USB Composite Device (which is how RSA Predator reports itself to the host PC), and (unfortunately) it claims it needs 500mA of current. I know for sure that this is not true: Ray Samuels, while not going into specific details, told me that the Predator's USB power consumption is "far less than 100mA", and I have no reasons not to believe him. The Predator only uses USB to power the DAC cirquit, the entire amp section is powered by the built-in Lithium battery. And this is a very sad thing, because not only it reduces Predator's compatibility with power-avarious android devices, but I also think this is one of the reasons why it is incompatible with Apple CCK, because it calls the same error message: "the device consumes too much power". Which it does not in reality...

 

And finally, the icing on the cake: 3$ generic USB hub!

 

 

Bingo!!! The highlighted item says... well, you see what it says, it's in English :-) But look at the right column value: 0!!! The device tells the host that it needs no current at all!!!

 

This brought me to an emperical, not science-backed conclusion that a USB hub (or at least certain types of USB hubs) is not transparent for Android USB OTG host device, such as Xperia Sola, and, in case it reports 0mA power reqiuirements, you can plug a coffee machine into it, and still have it accepted by your phone.

 

Disclaimer: a coffee machine was a joke. And if you burn something plugging things all over the place after reading this post - don't hold me responsible! :-)

post #2754 of 5568
Hello people thank you so much for this thread i became a member just to reply

I tried usb dac on my Galaxy S3 and it works awesome sound both from Steelseries Siberia Usb and Asus Xonar u3

Also i tried using USB sound recorder on a Hyundai T7 (chineese tablet with samsung exynos) and it sounds great thanks alot folks....Respect

Here is an image of it

post #2755 of 5568

Welcome!

Thanks!

post #2756 of 5568
Quote:
Originally Posted by VeXun View Post

Can someone please help me build a cart on amazon with what I need to use an amp / dac for my HTC one I'm not sure what usb otg cable to get or which dac amp to get, should I get the old e7 or the new e7k or whatever it is, I would like to keep the budget under 100$ if possible , if the sound quality won't be better I'm willing to spend a little more but not too much.

Thanks!

Sent from my HTC One using Tapatalk 2

 

Quote:
Originally Posted by VeXun View Post

Also forgot to mention I use only iems. My collection consists of "hf3's, x10i's, re-400's, tdk ba-200's, ue500's, e10's, gr02 BE's, s4's".

Thanks :thumbup:

Sent from my HTC One using Tapatalk 2

 

How about a HiFiMeDIY Sabre USB DAC with some headphones driving capability?

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

http://www.head-fi.org/t/646969/hifimediy-sabre-usb-dac-with-android#post_9431482

 

HTC One > digital USB audio out >> USB OTG cable >> HiFiMeDIY Sabre USB DAC/"amp" >> IEM

 

or 

 

HTC One > digital USB audio out >> USB OTG cable >> HiFiMeDIY Sabre USB DAC >> amp >> IEM

Amp:

http://www.head-fi.org/f/105/portable-headphone-amps

http://www.head-fi.org/t/596482/the-sub-100-portable-amps-shootout-11-1-amps-compared

post #2757 of 5568
Quote:
Originally Posted by SV_huMMer View Post

Warning: Spoiler! (Click to show)

 

Update on Sola/USB OTG Power Consumption Error:

 

I think I have a faint clue as to why a cheap USB DAC inserted between Xperia Sola and a USB Device may solve the Power Consumption Error.

 

I checked Windows Device Manager properties/Power tab for USB devices connected to my laptop, and here are the findings:

 

1) A USB Flash Drive, that was rejected by Sola if plugged straight into the OTG cable:

 

 

I know it's cyrillic, but the highlighted item is Mass Storage Device, and it claims it needs 500mA. 

 

2) Another USB Flash drive, that was accepted and mounted by Sola, plugged directly to USB OTG:

 

 

As you can see, the USB Mass Storage Device claims it needs only 200mA!!! Which means that Sola is willing to provide 200mA, but not 500mA. I guess the threshold is somewhere between these two values, but I have no way to tell the exact value.

 

3) RSA Predator - rejected by Sola if plugged directly into USB OTG:

 

 

The highlighted item says USB Composite Device (which is how RSA Predator reports itself to the host PC), and (unfortunately) it claims it needs 500mA of current. I know for sure that this is not true: Ray Samuels, while not going into specific details, told me that the Predator's USB power consumption is "far less than 100mA", and I have no reasons not to believe him. The Predator only uses USB to power the DAC cirquit, the entire amp section is powered by the built-in Lithium battery. And this is a very sad thing, because not only it reduces Predator's compatibility with power-avarious android devices, but I also think this is one of the reasons why it is incompatible with Apple CCK, because it calls the same error message: "the device consumes too much power". Which it does not in reality...

 

And finally, the icing on the cake: 3$ generic USB hub!

 

 

 

 

Bingo!!! The highlighted item says... well, you see what it says, it's in English :-) But look at the right column value: 0!!! The device tells the host that it needs no current at all!!!

 

This brought me to an emperical, not science-backed conclusion that a USB hub (or at least certain types of USB hubs) is not transparent for Android USB OTG host device, such as Xperia Sola, and, in case it reports 0mA power reqiuirements, you can plug a coffee machine into it, and still have it accepted by your phone.

 

Disclaimer: a coffee machine was a joke. And if you burn something plugging things all over the place after reading this post - don't hold me responsible! :-)

 

Dr. Bott T3 USB 2.0 hub:

http://www.zdnet.com/blog/apple/dr-bott-t3-usb-2-0-hub/1448

 

"iOS 4 changed the power limits of the USB DACs via camera connection kit, i.e. broke things.  With iOS 4 you can use a Dr. Botts "T3" portable hub to fool the iPad into thinking it is using a powered hub, and then you can use the DAC fully portable without power."

http://www.head-fi.org/t/507559/list-of-dacs-that-work-with-ipad/375#post_8255249

post #2758 of 5568

Hi everyone, a newbie here but had been lurking around for a long time in head fi :p

 

Firstly, thanks to those who contribute to this great thread! I was researching for a reasonably priced, high performance portable player for some time, from Sansa Clip+ to iBasso DX100 (ya it's out of my reasonably price range) to Sony Walkman Z/F series, and I finally stumbled upon this thread. I think using a source, in this case an Android based device, that outputs digital signal is a really good move as this allows flexibility in setting up one's portable or even home rig. Anyway, please keep up the good work guys!

 

Danba, I came across this post by Sony Support in their forum, think it might help? It was posted recently, Jun 20, 2013.

 

 

Quote:

USB host explained

Xperia™ devices do currently not support USB On-The-Go (USB OTG), but they do support the USB Host standard.

USB Host allows you to connect USB devices to your Xperia™ device via a USB Host cable (3rd party) or the Sony LiveDock™ multimedia station.

 

Different models support different USB Host features (device classes).

 

List of Xperia™ devices per supported USB Host device class (feature).

 

Explanation of device classes

 

HID = Human Interface Device = keyboards, mice or gamepads

USB mass storage = USB flash drives, memory card readers, digital cameras or external drives

Audio = USB speakers, USB microphones or USB audio DACs

 

Note! Some USB devices may not work with your Xperia™ device.

 

Examples of situations when you can use USB devices with your Xperia™ device:

 

Back up files to a USB memory stick or an external hard disk.

Play music and videos stored on a USB stick or an external hard disk on your Xperia™ device.

Transfer photos from your camera to your Xperia™ device (this depends on camera) - save storage space on the camera and show the photos to your friends on the Xperia™ device.

Write a text message, an email, a tweet, or update your Facebook status on a computer keyboard.

Play games using a gamepad or a joystick.

Navigate the Xperia™ device using a mouse.

 

HID and USB hub

 

Xperia™ arc

Xperia™ PLAY

Xperia™ neo

Xperia™ mini

Xperia™ mini pro

Xperia™ pro

Xperia™ ray

Live with Walkman

Xperia™ active

Xperia™ arc S

Xperia™ neo V

Xperia™ neo L

 

HID, USB hub and USB mass storage

 

Xperia™ S

Xperia™ acro S

Xperia™ ion

Xperia™ SL

Xperia™ P

Xperia™ sola

Xperia™ U

Xperia™ go

 

HID, USB hub and USB mass storage

 

Xperia™ TX

Xperia™ GX

Xperia™ TL

Xperia™ T

Xperia™ SX

Xperia™ VL

Xperia™ AX

Xperia™ Vc

Xperia™ V

 

Mainly for developers: These models also support the Android USB host API = can be used to control USB Host devices from Android apps

 

HID, USB hub, USB mass storage and Audio

 

Xperia™ Z

Xperia™ ZL

Xperia™ Tablet Z

 

Mainly for developers: These models also support the Android USB host API = can be used to control USB Host devices from Android apps

 

I think in short, all the Sony devices listed here can be used with USB Audio Recorder? For official support, the Xperia Z, ZL and Tablet Z allows direct USB to DAC, and you can play songs with native player or players like poweramp?

post #2759 of 5568
Quote:
Originally Posted by yellobie View Post

Hi everyone, a newbie here but had been lurking around for a long time in head fi tongue.gif

Firstly, thanks to those who contribute to this great thread! I was researching for a reasonably priced, high performance portable player for some time, from Sansa Clip+ to iBasso DX100 (ya it's out of my reasonably price range) to Sony Walkman Z/F series, and I finally stumbled upon this thread. I think using a source, in this case an Android based device, that outputs digital signal is a really good move as this allows flexibility in setting up one's portable or even home rig. Anyway, please keep up the good work guys!

Danba, I came across this post by Sony Support in their forum, think it might help? It was posted recently, Jun 20, 2013.



I think in short, all the Sony devices listed here can be used with USB Audio Recorder? For official support, the Xperia Z, ZL and Tablet Z allows direct USB to DAC, and you can play songs with native player or players like poweramp?

Don't make my mistake though, buddy! smily_headphones1.gif bear in mind two things: first, UARP requires at least 800x480 screen resolution. Otherwise the app will simply refuse to install. See my Xpera Go "no go" post http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2700#post_9647443

Second, don't forget the OTG power consumption error problem that Xperias have. Again, see some of my posts here recently.
post #2760 of 5568
Quote:
Originally Posted by SV_huMMer View Post


Don't make my mistake though, buddy! smily_headphones1.gif bear in mind two things: first, UARP requires at least 800x480 screen resolution. Otherwise the app will simply refuse to install. See my Xpera Go "no go" post http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2700#post_9647443

Second, don't forget the OTG power consumption error problem that Xperias have. Again, see some of my posts here recently.

Thanks for your warning notes hummer! I was looking at Xperia V till I saw the problems you faced. Hope you can get them work out soon. By the way, do you intend to try custom ROM for your Sola? I was thinking, maybe a custom USB driver might help in your case? Maybe DanBa or someone who knows more can help. wink_face.gif

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