[Galaxy S III General] danba:
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://xdaforums.com/showpost.php?p=27247705&postcount=279

. Behringer UCA222:

http://www.behringer.com/en/Products/UCA222.aspx

http://www.computeraudiophile.com/f...owered-samsung-galaxy-s-iii-12338/#post171651

. Beresford Caiman:

http://www.techradar.com/reviews/au...fi-accessories/beresford-caiman-673787/review

http://www.computeraudiophile.com/f...owered-samsung-galaxy-s-iii-12338/#post171651

. C-Media chipset-based sound card Dynamode 7 channel USB 2.0 (USB DAC/amp):

http://www.chinacomputerparts.com/d-p1140199199635616900-cables/

http://xdaforums.com/showpost.php?p=27604946&postcount=449

. Cakewalk Sonar SPS 25:

https://www.cakewalk.com/support/kb/reader.aspx/2007013101

http://www.computeraudiophile.com/f...owered-samsung-galaxy-s-iii-12338/#post171651

. Corsair HS1 Gaming headset (USB DAC/amp/headphones):

http://www.anandtech.com/show/3989/corsair-hs1-gaming-headset

http://xdaforums.com/showthread.php?p=27238117#post27238117

. FiiO E7 (USB DAC/amp):

http://fiio.com.cn/product/index.aspx?ID=28&MenuID=020301

http://www.androidnz.net/2012/07/galaxy-s-iii-real-user-review-part-2.html

. Furutech ADL Cruise (USB DAC/amp):

http://www.furutech.com/a2008/product2.asp?prodNo=399

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/585#post_8567838

. GoVibe DAC:

http://jaben.net/forums/index.php?topic=2824.0

http://forum.lowyat.net/index.php?showtopic=2440879&st=500&p=53317360&#entry53317360

. GoVibe Mini USB DAC:

http://www.jaben.com.au/collections/go-vibe/products/govibe-minidac

http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii/15#post_8525675

. GoVibe Petite (USB DAC/amp):

http://www.head-fi.org/t/290711/govibe-petite-dac-amp-appreciation-thread-pics-little-update

http://www.head-fi.org/t/595071/and...-issues-priority-with-google/195#post_8552452

. HRT Music Streamer II:

http://highresolutiontechnologies.com/music-streamer-ii

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/465#post_8534856

. HeadAmp Pico (USB DAC/amp): (apparently with only US S III for the time being)

http://www.headamp.com/pico/pico_dac_amp/index.htm

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/480#post_8539705

. HeadRoom Total BitHead (USB DAC/amp):

http://www.headphone.com/learning-center/bithead-faq.php

http://www.head-fi.org/t/595071/and...-issues-priority-with-google/135#post_8527516

. HiFiMan Express HM-101:

http://www.head-fi.org/t/571330/hifiman-express-brand-and-hm-101-portable-usb-dac

http://xdaforums.com/showpost.php?p=27284184&postcount=291

. iBasso D-Zero (USB DAC/amp):

http://www.ibasso.com/en/products/show.asp?ID=73

http://neutronmp.com/forum/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/pictures-of-your-portable-rig-part-xv/5535#post_8509186

. iBasso D2+ Boa (USB DAC/amp):

http://www.ibasso.com/en/products/show.asp?ID=42

http://www.computeraudiophile.com/f...owered-samsung-galaxy-s-iii-12338/#post171651

. iBasso D5 (USB DAC/amp):

http://www.head-fi.org/t/556490/ibasso-d5-hj-yet-another-usb-dac-amp

http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii/15#post_8498377

. iBasso D12 (USB DAC/amp):

http://www.ibasso.com/en/products/show.asp?ID=63

http://xdaforums.com/showpost.php?p=29069294&postcount=924

. KingRex UD-01:

http://www.kingrex.co.uk/dac.html

https://www.facebook.com/headfonia/posts/352787358128700

. Microsoft Philips Digital Sound System 80 (USB DAC/amp/speakers):

http://en.wikipedia.org/wiki/Digital_Sound_System_80

http://xdaforums.com/showthread.php?t=1703218

. NuForce Icon HDP (USB DAC/preamp/amp):

http://www.nuforce.com/hp/products/iconhdp/index.php

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/585#post_8567838

. Objective DAC (ODAC):

http://epiphany-acoustics.co.uk/our-products/e-dac-24bit-miniature-usb-dac/

http://www.jdslabs.com/item.php?fetchitem=46

http://www.headnhifi.com/index.php/shop/objective/odac

https://plus.google.com/107354758331405644147/posts/PCaM42irMeU

. ODAC+O2 (USB DAC/amp):

http://epiphany-acoustics.co.uk/our...ure-desktop-headphone-amplifier-with-usb-dac/

http://www.jdslabs.com/item.php?fetchitem=48

http://www.headnhifi.com/index.php/shop/objective/o2120527192048

https://plus.google.com/107354758331405644147/posts/PCaM42irMeU

. Ordnance .25 (USB DAC/amp):

http://jaben.net/forums/index.php?topic=9984.0

http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii#post_8462693

. Topping D1 Mark 2 (USB DAC/amp):

http://translate.googleusercontent....?id=25&usg=ALkJrhhte1Q6A1NnVWodszs9J4x85vGfDg

http://xdaforums.com/showpost.php?p=28673076&postcount=871

. Topping TP30 (USB DAC/amp):

http://news.cnet.com/8300-5_3-0.html?keyword=Topping+TP-30

http://www.androidnz.net/2012/05/samsung-galaxy-s-iii-usb-audio.html

Apparently "Galaxy S III + (some) USB DAC" and "(some) computer + (some) USB DAC" have at least the same sound quality:

"How about the SQ of the S3 + NuForce Icon HDP? What headphones do you use?"

"It's quite good. Slightly, not very noticeable, better than it was connected to my computer.

so if you wanna know more about this, you can just simply refer to those review of HDP.

P.S. I am using HD600 & UM1 for testing"

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/585#post_8571797

"For anyone interested, the D12 USB DAC works when connected to a Galaxy S3. It sounds the same to me as it does when connected to a computer."

http://www.head-case.org/forums/topic/9413-ibasso-d12-vs-pico-dacamp/page__st__20#entry526070