Enable USB audio on any Android 4.0 smartphone/tablet - Page 9 - AVS Forum
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post #241 of 248 Old 07-11-2014, 02:36 AM - Thread Starter
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Samsung Galaxy Note 10.1 2014 Edition & LH Labs Geek Out 1000 without or with USB Audio Player PRO (UAPP) :
http://www.engadget.com/2013/10/01/s...-2014-edition/
http://www.audiostream.com/content/l...hone-amplifier
http://www.head-fi.org/t/595071/andr...#post_10701624



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post #242 of 248 Old 07-12-2014, 12:45 AM - Thread Starter
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Nexus 7 powered car mod: USB audio out towards a FiiO E17
http://the-gadgeteer.com/2014/06/20/...ered-car-mods/





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post #243 of 248 Old 07-14-2014, 12:51 AM - Thread Starter
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Full-size USB DAC/amp & USB Audio Player PRO: Benchmark DAC2 D, Oppo HA-1







"Sneak Peek! Working on Hi-Res Audio Playback via Android tablet and USB Dacs. USB Audio Player Pro is the key. Currently playing 24/352 from a Dell Venue."
https://www.facebook.com/pages/Every...rk/53610321526






"Android devices can be connected to the rear-USB input when using OTG cable. USB Audio Player Pro even allows 24/384 via Android devices, which can be decoded by the Oppo."
http://everythingaudionetwork.blogsp...ppos-ha-1.html
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post #244 of 248 Old 07-22-2014, 03:05 AM - Thread Starter
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Onkyo HF Player app (apparntly DLNA, DSD -> PCM, DSD -> DoP, ...): available on Google Play store at the end of July
http://av.watch.impress.co.jp/docs/n...19_658753.html







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post #245 of 248 Old 07-28-2014, 07:37 AM - Thread Starter
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Sony Xperia Z2, Samsung Galaxy S5 & high resolution audio Dëff DDA-A20RC USB DAC/amp (with clip):
http://av.watch.impress.co.jp/docs/n...28_655642.html







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post #246 of 248 Old 07-31-2014, 10:25 AM - Thread Starter
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Sony Xperia ZL2 & native high resolution USB audio:
http://www.xperiablog.net/2014/05/10...os-and-videos/
http://www.phileweb.com/review/artic...5/14/1186.html

Xperia ZL2 >> USB OTG adapter cable + regular USB cable >> Sony PHA-2 USB DAC/amp >> Sony MDR-1R headphones






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post #247 of 248 Old 08-02-2014, 05:55 AM - Thread Starter
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Teac HA-P50 USB DAC/amp: a standard USB DAC and an Android-specific USB DAC!
http://www.whathifi.com/news/teac-un...r-built-in-dac






Standard USB DAC & Android-specific USB DAC:
http://www.head-fi.org/t/595071/andr...0#post_8492288
http://www.head-fi.org/t/595071/andr...5#post_8732417

A standard USB DAC acts as a USB Device.
A standard USB DAC can work with a PC, a Mac or an Android-powered device acting as a USB Host.



An Android-specific USB DAC acts as a USB Host.
An Android-specific USB DAC can work with an Android-powered device acting as a USB Device.
An Android-specific USB DAC can't work with a PC or a Mac, because a USB Host can't work with another USB Host: USB is a master-slave communication bus, USB communication can only take place between a master device (i.e. USB Host) and a slave device (i.e. USB Device).





Teac HA-P50 as an Android-specific USB DAC: "A", iPod/iPhone/iPad/android connection port
"Playback at CD quality (44.1kHz/16-bit) is supported for devices running Android 4.1 or later (this does not guarantee operation for all Android devices)."
http://sega360.wordpress.com/2014/07...C%92%EF%BC%89/

Docomo Sony Xperia >> regular USB cable >> "A" > Teac HA-P50 >> headphones




Teac HA-P50 as a standard USB DAC: "B", computer connection port
High resolution audio playback can be supported using USB Audio Player PRO or USB Audio Recorder PRO.
http://sega360.wordpress.com/2014/05...E%A5%E7%B6%9A/

Android device >> USB OTG cable >> "B" > Teac HA-P50 >> headphones




USB powering:
The Teac HA-P50, acting as a USB Host or an Android-specific USB DAC, powers the connected Android device.



A self-powered standard USB DAC (i.e. charging USB DAC), acting as a USB Device, can also power some USB OTG-capable Android device using standard USB ACA (Accessory Charger Adapter) mechanism.

A USB OTG device is configured to USB Host mode supplying or drawing power, or USB Device mode by ACA/OTG software/hardware measuring the value of the ID resistor of the USB interface.

According to the value of the ID resistor "R"
. the Android device should act as a USB Host, interwork with the USB DAC acting as a USB Device, and supply power to the bus-powered USB DAC
. the Android device should act as a USB Host, interwork with the USB DAC acting as a USB Device, and draw power from an external battery
. the Android device should act as a standalone USB Device, and draw power from an external battery
. the Android device should act as a USB Device, interwork with a USB Host, and draw power from an external power source.

Currently, Samsung uses different value of the ID resistor than what is specified in the USB ACA specification (i.e. USB Battery Charging 1.2 specification).
http://www.head-fi.org/t/595071/andr...5#post_9403679
http://www.head-fi.org/t/595071/andr...5#post_9614980

Google and Android device makers should support USB ACA (with standard ID resistor values), only one small step further from USB OTG.
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post #248 of 248 Old 08-23-2014, 10:54 AM - Thread Starter
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A solution to get rid of a noisy USB power and a phone battery draining is to use a USB OTG-Y cable from Elijah Audio and a small external battery:
https://www.facebook.com/ElijahAudio

Samsung Galaxy S4 >> Elijah Audio USB OTG-Y cable powered by a 5V battery >> HRT microStreamer USB DAC/amp >> phones








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