USB DAC support on USB OTG enabled devices

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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby DanBa » Sun Jul 08, 2012 5:35 pm

The Samsung Galaxy S III interworks with the iBasso D2 Boa:
http://www.head-fi.org/t/552014/picture ... st_8509186

Samsung Galaxy S III > digital audio stream >> USB DAC/amp iBasso D2 Boa >> Sennheiser HD 518

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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby DanBa » Sat Jul 14, 2012 6:54 pm

A list of standard USB DAC reportedly interworking with the Android-powered smartphone Samsung Galaxy S III for the time being:

Samsung Galaxy S III > digital audio stream >> USB OTG cable with USB Micro-A plug inserted in the S III >> standard USB DAC >> amp >> headphones

. AMB Labs Gamma2:
http://www.amb.org/audio/gamma2/
http://forum.xda-developers.com/showpos ... tcount=279

. C-Media chipset-based sound card Dynamode 7 channel USB 2.0 (USB DAC/amp):
http://www.chinacomputerparts.com/d-p11 ... 00-cables/
http://forum.xda-developers.com/showpos ... tcount=449

. Corsair HS1 Gaming headset (USB DAC/amp/headphones):
http://www.anandtech.com/show/3989/cors ... ng-headset
http://forum.xda-developers.com/showthr ... st27238117

. FiiO E7 (USB DAC/amp):
http://fiio.com.cn/product/index.aspx?I ... uID=020301
http://www.androidnz.net/2012/07/galaxy ... art-2.html

. GoVibe Mini USB DAC:
http://www.jaben.com.au/collections/go- ... be-minidac
http://www.head-fi.org/t/614111/finally ... st_8525675

. GoVibe Petite (USB DAC/amp):
http://www.head-fi.org/t/290711/govibe- ... tle-update
http://www.head-fi.org/t/595071/android ... st_8552452

. HRT Music Streamer II:
http://highresolutiontechnologies.com/music-streamer-ii
http://www.head-fi.org/t/608535/wolfson ... st_8534856

. HeadAmp Pico (USB DAC/amp):
http://www.headamp.com/pico/pico_dac_amp/index.htm
http://www.head-fi.org/t/608535/wolfson ... st_8539705

. HeadRoom Total BitHead (USB DAC/amp):
http://www.headphone.com/learning-cente ... ad-faq.php
http://www.head-fi.org/t/595071/android ... st_8527516

. HiFiMan Express HM-101:
http://www.head-fi.org/t/571330/hifiman ... le-usb-dac
http://forum.xda-developers.com/showpos ... tcount=291

. iBasso D-Zero (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=73
viewtopic.php?f=4&t=314&start=20#p1636

. iBasso D2 Boa (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=30
http://www.head-fi.org/t/552014/picture ... st_8509186

. iBasso D5 (USB DAC/amp):
http://www.head-fi.org/t/556490/ibasso- ... sb-dac-amp
http://www.head-fi.org/t/614111/finally ... st_8498377

. iBasso D12 (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=63
http://www.head-fi.org/t/614111/finally ... st_8525675

. Microsoft Philips Digital Sound System 80 (USB DAC/amp/speakers):
http://en.wikipedia.org/wiki/Digital_Sound_System_80
http://forum.xda-developers.com/showthr ... ?t=1703218

. Objective DAC (ODAC):
http://epiphany-acoustics.co.uk/our-pro ... e-usb-dac/
http://www.jdslabs.com/item.php?fetchitem=46
http://www.headnhifi.com/index.php/shop/objective/odac
https://plus.google.com/107354758331405 ... CaM42irMeU

. ODAC+O2 (USB DAC/amp):
http://epiphany-acoustics.co.uk/our-pro ... h-usb-dac/
http://www.jdslabs.com/item.php?fetchitem=48
http://www.headnhifi.com/index.php/shop ... 0527192048
https://plus.google.com/107354758331405 ... CaM42irMeU

. RSA Predator (USB DAC/amp):
http://www.raysamuelsaudio.com/products/predator
http://www.head-fi.org/t/595071/android ... st_8538933

. Topping D1 Mark 2 (USB DAC/amp):
http://translate.googleusercontent.com/ ... J4x85vGfDg
http://forum.xda-developers.com/showpos ... tcount=871

. Topping TP30 (USB DAC/amp):
http://news.cnet.com/8300-5_3-0.html?ke ... ping+TP-30
http://www.androidnz.net/2012/05/samsun ... audio.html
Last edited by DanBa on Thu Jul 26, 2012 7:43 am, edited 1 time in total.
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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby DanBa » Sun Jul 15, 2012 11:50 pm

The Samsung Galaxy S III interworks with the asynchronous USB DAC HRT Streamer II:
http://www.head-fi.org/t/608535/wolfson ... st_8534856

Samsung Galaxy S III > digital audio stream >> USB OTG cable with USB Micro-A plug inserted in the S III >> asynchronous USB DAC HRT Streamer II >> cMoyBB headphone amplifier >> headphones


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Last edited by DanBa on Tue Jul 17, 2012 4:36 pm, edited 1 time in total.
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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby DanBa » Tue Jul 17, 2012 4:14 pm

Samsung Galaxy S III interworks with RSA Predator:
http://www.head-fi.org/t/595071/android ... st_8538933

"Just purchased a usb otg cable today and tried out with my RSA predator, works without any problem.
What a suprise! the sound quality actually upgraded, from iPod classic + Predator(amp only) to SIII + Predator(DAC/amp)"

Samsung Galaxy S III > digital audio stream >> USB OTG cable >> USB DAC/amp RSA Predator >> IEM


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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby DanBa » Sat Jul 21, 2012 3:01 pm

The combo "Odac + Neco V3" is very well-praised:
http://www.head-fi.org/t/513233/neco-so ... -2-amp/105

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"ODAC + NECO V.3 + Sennheiser HD580 = A MATCH MADE IN HEAVEN.
I can't tell you how beautiful this rig sounds. We all know how well the HD580/600 scales with better sources and amps.. but synergy is often undervalued. The ODAC is beautifully resolving and clean.. but the Neco really steals the show, IMO.
My V.3 has the 8610s & lithium battery.. and boy, does the HD580 love it. A DEAD silent background, fantastic dynamic range.. and the artful Sennheiser sound.. on steroids! Treble has spectacular air, crispness, and detail.. the mids are very very transparent and deep.. with the bass coming tight and punchy. One thing I've really noticed the Senn benefits from is the V.3's dual opamp setup.. which provide fantastic channel separation, imaging, and soundstage. It's so immersive.. I can listen to this setup for hours on end. I like this little combo more than my desktop rig (via the tube or SS output!) and the ODAC+O2 (which is a little too clinical). For those one the fence about this amp.. stop waffling.. it's a GEM.
I also dropped the gain jumpers in so I've got it set at low gain (2.3x) since it's being used with the ODAC (2 Vrms output). the Neco it quite ably drives the HE-500, btw. Very clean & dynamic, again.

When driving the HE-500.. I like this combo more than the O2."


The Odac USB DAC can interwork with an Android powered smartphone Samsung Galaxy S III as well as with a PC or a Mac.

Odac USB DAC:
http://epiphany-acoustics.co.uk/our-pro ... e-usb-dac/ http://www.jdslabs.com/item.php?fetchitem=46
http://www.headnhifi.com/index.php/shop/objective/odac

Neco V3 amp :
http://www.ebay.co.uk/itm/new-V3-DUAL-A ... d=ViewItem
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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby DanBa » Tue Jul 24, 2012 12:43 pm

Solidus wrote:I've read that Jellybean has USB DAC support. Will report back when I get my Nexus 7 in a couple of weeks.

As expected, for the time being the Nexus 7 doesn't interwork with standard USB DAC like FiiO E7 or FiiO E17:
http://www.head-fi.org/t/616125/google- ... st_8525225


A stock Jelly Bean powered Nexus 7 should be able to interwork with an upcoming Android-specific USB audio out-capable USB DAC, like the Gear4 speaker dock, that acts a USB host (and the Nexus 7 as a USB peripheral).
http://www.engadget.com/2012/06/30/gear ... -google-i/

Nexus 7 operating as a USB peripheral > digital audio stream >> Android-specific USB DAC "Gear4 speaker dock" operating as a USB host > Gear4 speaker dock’s amp > Gear4 speaker dock’s speakers

Anyway, the Android-specific USB audio driver is included in the Jelly Bean kernel source code of the Nexus 7:
http://forum.xda-developers.com/showthr ... ?t=1736578
https://github.com/edoko/Air_Kernel_for ... ource.c#L2

2 * Gadget Function Driver for USB audio source device
4 * Copyright (C) 2012 Google, Inc.

43 .bInterfaceClass = USB_CLASS_AUDIO,
44 .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,

308 .bInterfaceClass = USB_CLASS_AUDIO,
309 .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,



The standard USB audio driver is also included in the Jelly Bean kernel source code of the Nexus 7:
https://github.com/drewis/android_kerne ... /card.c#L2

2 * (Tentative) USB Audio Driver for ALSA

174 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
175 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
176 altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) {

692 .bInterfaceClass = USB_CLASS_AUDIO,
693 .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }


a standard USB audio-enabled Nexus 7 operating as a USB host > digital audio stream >> standard USB DAC like FiiO E7 or Objective DAC operating as a USB peripheral >> amp >> headphones


It’s up to us to require Google & Android device manufacturers to enable standard USB audio!
http://code.google.com/p/android/issues ... ry%20Stars
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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby zetathix » Wed Jul 25, 2012 5:49 pm

Today I bought an OTG cable and try with my system.
SGS3 (neutron neon as player) => OTG => iBASSO D-ZERO (usb in - power switch ON - gain HI - charge OFF) =>IEM (Visang V04)
And it's works! One suggestion is my phone consume more power than pass through 3.5

Because of this method I have a question pop in my head, anyone know which way that Wolfson chip in SGS3 connected to? 3.5?
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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby DanBa » Thu Jul 26, 2012 7:37 am

Thanks !

Samsung Galaxy S III USB out bypassing the internal DAC:
Samsung Galaxy S III > digital audio stream > micro USB connector >> USB OTG cable >> standard USB DAC >> amp >> headphones

Samsung Galaxy S III headphone out:
S III player > digital audio stream > S III internal DAC > analog audio stream > S III internal amp > 3.5mm 4-pole connector >> headphones

Samsung Galaxy S III line out bypassing the internal amp:
S III player > digital audio stream > S III internal DAC > analog audio stream > micro USB connector >> Samsung audio dock >> amp >> headphones

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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby zetathix » Thu Jul 26, 2012 2:09 pm

This is really solid info, Thank you DanBa.
And that dock look nice. But maybe not the way for me to go.
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Re: USB DAC support on USB OTG enabled devices? {Please vote

Postby dmitrykos » Thu Jul 26, 2012 8:24 pm

It would be great that EVER Android allowed other than 16-bit output. Neutron is capable of supplying audio DAC with any bit depth and outputting to DAC's native 24-bits would be very good for audio quality. I do not speak about changing sampling rate and targeting 1:1 with sampling rate of music file. I HOPE that BlackBerry 10 device offers some more possibilities in this respect and its API allows it unlike Android API.
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