[Galaxy Note II Q&A, Help & Troubleshooting] danba:
A list of standard USB DAC reportedly interworking with the Android-powered smartphone Samsung Galaxy Note II:

stock Galaxy Note II > digital USB audio out >> USB OTG cable (micro-A plug inserted into the Note II) >> standard USB DAC >> amp >> headphones

. Apex Glacier (USB DAC/amp):

http://www.head-fi.org/t/632019/apex-glacier-amp-dac-review-and-appreciation-thread

http://www.head-fi.org/t/632019/apex-glacier-amp-dac-review-and-appreciation-thread/165#post_8924724

. Asus Xonar Essence One using USB Audio Recorder PRO (USB DAC/amp):

http://www.6moons.com/audioreviews/asus/1.html

http://www.head-fi.org/t/542563/asus-essence-one-headphone-amp-dac-cebit-2011/1365#post_9152456

. Asus Xonar U3 (USB DAC/amp):

http://www.overclockersclub.com/reviews/asus_xonar_u3/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1200#post_8997468

. Audio-gd NFB-16 (USB DAC/amp):

http://www.audio-gd.com/Pro/Headphoneamp/NFB16/NFB16EN.htm

http://www.head-fi.org/t/625054/samsung-galaxy-note-2/120#post_8943120

. AudioQuest DragonFly using USB Audio Recorder PRO:

http://www.head-fi.org/t/617241/audioquest-dragonfly-review-affordable-outstanding-tiny-dac-amp

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1035#post_8959237

. CEntrance DACport LX using USB Audio Recorder PRO:

http://audio-head.com/the-portable-audiophile-dac-centrance-dacport-lx/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1065#post_8968468

. ELE EL-D01:

http://www.cnfeature.com/goods.php?id=1299

http://www.head-fi.org/t/643883/por...note-2-and-grado-sr80i-heaphones#post_9012249

. FiiO E07K Andes (USB DAC/amp): to be confirmed

http://www.headphiles.org/index.php?t=msg&goto=253249&

http://www.head-fi.org/t/638910/new-fiio-e07k-andes-information-and-impressions/15#post_8924515

http://www.head-fi.org/t/628254/fiio-e18/15#post_8973799

. Focal XS 2.1 (USB speakers):

http://reviews.cnet.com/speakers-speaker-systems/focal-xs-speakers-with/4505-6467_7-33618064.html

http://www.homecinema-fr.com/forum/...16-go-android-4-1-2-t30029275.html#p177362999

. GoVibe Magnum (USB DAC/amp):

http://www.head-fi.org/t/324577/review-govibe-magnum-usb-dac-amp

http://www.head-fi.org/t/633201/con...xy-s3-international-us-or-note-2#post_8809248

. GoVibe Martini-U (USB DAC/amp):

http://jaben-bandung.com/index.php?route=product/product&product_id=196

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/990#post_8942287

. GoVibe Vulcan (USB DAC/amp):

http://www.head-fi.org/t/386127/go-vibe-vulcan

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/960#post_8929084

. HRT HeadStreamer Mobile (USB DAC/amp):

http://highresolutiontechnologies.com/headstreamer-mobile

http://www.computeraudiophile.com/f...-note-2-while-using-usb-dac-how-please-14029/

. HRT microStreamer (USB DAC/amp):

http://www.positive-feedback.com/Issue65/microstreamer.htm

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1605#post_9123185

. HeadAmp Pico USB DAC/Amp: bug fixed by HeadAmp

http://www.headfonia.com/headamp-pico/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1305#post_9037872

. HeadAmp Pico Upsampling USB DAC:

http://www.head-fi.org/t/413230/headamp-pico-upsampling-usb-dac-pre-order-now-at-intro-price

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1305#post_9037872

. Headstage Lyrix Pro USB total (USB DAC/amp):

http://www.headphonia.com/Amps/Headstage-Lyrix-Pro-USB-total::10071.html

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/795#post_8854850

. HiFimeDIY Sabre USB DAC using USB Audio Recorder PRO:

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

http://www.head-fi.org/t/652535/if-...with-your-android-phone-try-this#post_9192976

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

http://www.headfonia.com/fiio-e7-meet-your-rival-the-ibasso-d-zero/

http://www.head-fi.org/t/625054/samsung-galaxy-note-2/120#post_8943120

. iBasso D12 (USB DAC/amp):

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

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/405#post_8750862

. Leckerton UHA-6S MKII (USB DAC/amp):

http://www.innerfidelity.com/content/leckerton-uha-6s-mkii-portable-headphone-amplifier

http://www.head-fi.org/t/625054/samsung-galaxy-note-2/30#post_8777791

. MyST 1866 PortaDAC (USB DAC/amp):

http://www.musicaacoustics.com/wp/amplifiers/myst-1866/

http://player.ru/showthread.php?t=74459&page=34&p=1084707&viewfull=1#post1084707

. 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

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/435#post_8758515

. 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

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/435#post_8758515

. RSA Intruder (USB DAC/amp):

http://www.innerfidelity.com/conten...ruder-balanced-portable-headphone-amp-and-dac

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/660#post_8819856

. RSA Predator (USB DAC/amp):

http://www.6moons.com/audioreviews/predator/predator_2.html

http://www.head-fi.org/t/625054/samsung-galaxy-note-2/120#post_8960049

. Sony PHA-1 (USB DAC/amp):

http://www.touchmyapps.com/2012/10/09/sony-pha-1-idevice-dac-and-headphone-amp-in-review/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/465#post_8769593

. Stoner Acoustics UD100:

http://www.head-fi.org/t/626632/tiny-dac-big-sound-impression-of-stoner-acoustics-ud100-vs-odac

http://forum.lowyat.net/index.php?showtopic=2449848&st=220&p=56352256&#entry56352256

. VentureCraft Go-Dap X (USB DAC/amp): USB cable provided by VentureCraft

http://www.head-fi.org/t/609906/new-venturecraft-go-dap-x-for-both-idevices-and-pcs

http://www.head-fi.org/t/609906/new-venturecraft-go-dap-x-for-both-idevices-and-pcs/345#post_9174335

. xDuoo XP-1 (USB DAC/amp):

http://www.jaben.com.hk/ProductView.asp?ID=776&SortID=358

http://www.head-fi.org/t/642504/xdu...ng-portable-dac-and-amp-units/45#post_9176366

. Zoom H4 using USB Audio Recorder PRO (USB recorder):

http://en.wikipedia.org/wiki/Zoom_H4_Handy_Recorder

http://xdaforums.com/showpost.php?p=35472432&postcount=23

So far, like the quad-core Exynos powered Galaxy S III, the new quad-core Exynos powered Samsung Galaxy Note II can work with the FiiO E7, the iBasso D12, Leckerton UHA-6S MKII, the ODAC, … ; had some issue with the HeadAmp Pico (bug fixed by HeadAmp); and doesn’t work with the FiiO E17 using the stock USB audio driver.

So, in regard to the USB protocol, the behaviour of the Galaxy Note II is likely identical to the behaviour of the Galaxy S III.

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

stock Samsung Galaxy S III > digital USB audio out >> USB OTG cable (micro-A plug inserted into the S III) >> standard USB DAC >> amp >> headphones

. ALO audio The International using USB Audio Recorder PRO (USB DAC/amp):

http://audio-head.com/the-international-headphone-ampdac-by-alo-audio/#more-1002

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1590#post_9117178

. AMB Gamma 1:

http://www.amb.org/audio/gamma1/

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/780#post_8750043

. AMB Gamma 2:

http://www.amb.org/audio/gamma2/

http://xdaforums.com/showpost.php?p=27247705&postcount=279

. Apex Glacier (USB DAC/amp):

http://www.ttvjaudio.com/Apex_High_Fi_Audio_Glacier_portable_headphone_amp_p/aaa0000010.htm

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/825#post_8776449

. Asus Xonar U3 (USB DAC/amp):

http://www.asus.com/Multimedia/Audio_Cards/Xonar_U3/

http://mybroadband.co.za/vb/showthread.php/429589-Samsung-Galaxy-S3?p=8551119&viewfull=1#post8551119

. Atoll DAC 100:

http://www.6moons.com/audioreviews/atoll2/atoll.html

http://xdaforums.com/showpost.php?p=35266076&postcount=17

. Audio-gd Sparrow Version A (USB DAC/amp):

http://www.audio-gd.com/Pro/Headphoneamp/Sparrow/SparrowEN.htm

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/915#post_8907415

. AudioQuest DragonFly using USB Audio Recorder PRO:

http://www.stereophile.com/content/audioquest-dragonfly-usb-da-converter

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1680#post_9151794

. Behringer UCA202 (USB DAC/amp):

http://www.behringer.com/EN/Products/UCA202.aspx

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/240#post_8654226

. Behringer UCA222 (USB DAC/amp):

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 CM119 chipset-based sound card Dynamode 7 channel USB 2.0 (USB DAC/amp):

http://soundplayer.systempebisnisonline.com/speaker/dynamode-7-channel-usb-2-0-sound-card/

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

. C-Media CM6911 chipset-based sound card 3D Sound (USB DAC/amp):

http://www.ebay.co.uk/itm/USB-Exter...tem483b065ebb&clk_rvr_id=448505625943&afsrc=1

http://www.droidforums.net/forum/an...dio-any-android-4-0-device-7.html#post2378579

. 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

. Cambridge Audio DacMagic:

http://www.headfonia.com/cambridge-dacmagic-review/

http://www.head-fi.org/t/631855/galaxy-s3-and-ca-dacmagic-plus#post_8899779

. CEntrance DacMini using USB Audio Recorder PRO (USB DAC/amp):

http://centrance.com/products/dacmini/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1200#post_8998731

. CEntrance DACport LX using USB Audio Recorder PRO:

http://www.headfonia.com/cheaper-better-the-centrance-dacport-lx/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1755#post_9188208

. Citypulse DA2.03e (USB DAC/amp):

http://www.citypulse-audio.com/2,03e.htm

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1710#post_9162300

. 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

. Creative Xmod:

http://reviews.cnet.com/external-audio-adapters/creative-xmod/4505-9335_7-32105686.html

http://www.forum-audiophile.fr/musi...a-activer-dans-android-t24441-60.html#p336853

. Dared MP 5 or ALO JV5 (USB DAC/amp):

http://www.positive-feedback.com/Issue24/dared_mp5.htm

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/990#post_8948190

. ELE EL-D01:

http://www.head-fi.org/t/586909/the...ele-hi-fi-usb-18-dac-pg-328/4905#post_8886336

http://www.head-fi.org/t/642554/fiio-e7-galaxy-s3-questions-for-car-audio/15#post_8991125

. FiiO E7 (USB DAC/amp):

http://www.headfonia.com/fiio-e7-portable-dac/

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

. FiiO E07K Andes (USB DAC/amp): to be confirmed

http://headfonics.com/2012/12/fiio-e07k-the-andes/

http://www.head-fi.org/t/638910/new-fiio-e07k-andes-information-and-impressions/15#post_8924515

http://www.head-fi.org/t/628254/fiio-e18/15#post_8973799

. FiiO E17 using USB Audio Recorder PRO (USB DAC/amp):

http://www.headfonia.com/the-upgrade-fiio-e17-alpen/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1020#post_8958018

. 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.head-fi.org/t/566934/introducing-the-govibe-mini-usb-dac

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

. Graham Slee Bitzie (USB DAC/amp):

http://www.gspaudio.co.uk/bitzie-usb-dac-external-soundcard.htm

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1725#post_9165957

. HRT HeadStreamer (USB DAC/amp):

http://www.headfonia.com/hrt-headstreamer-review/

http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/750#post_8677483

. HRT microStreamer (USB DAC/amp):

http://tweekgeek.blogspot.fr/2013/01/hrt-microstreamer-review.html

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1635#post_9132299

. 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: bug fixed by HeadAmp

http://www.head-fi.org/t/258967/hea...nal-upsampling-24-96-usb-dac-pre-order-thread

http://www.head-fi.org/t/632019/apex-glacier-amp-dac-review-and-appreciation-thread/270#post_9036297

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1305#post_9037872

. HeadAmp Pico Upsampling USB DAC:

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

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1305#post_9037872

. 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

. HeadStage USB DAC cable:

http://www.inearmatters.net/2010/04/short-review-headstage-usb-dac-cable.html

http://www.headphiles.org/index.php/topic,4452.msg241979.html#msg241979

. 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

. HiFimeDIY Sabre USB DAC using USB Audio Recorder PRO:

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

http://xdaforums.com/showpost.php?p=36704343&postcount=75

. Hippo CriCri+ using USB Audio Recorder PRO (USB DAC/amp):

http://www.head-fi.org/t/626412/review-hippo-cricri-what-more-could-you-ask-from-this

http://forum.lowyat.net/index.php?showtopic=2222840&st=60&p=57358183&#entry57358183

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

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

http://www.head-fi.org/t/571116/review-ibasso-d-zero-with-fiio-e7-comparison/30#post_8933882

. 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#post_8462693

. iBasso D6 using USB Audio Recorder PRO (USB DAC/amp):

http://www.ibasso.com/en/products/show.asp?ID=69

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1170#post_8980613

. iBasso D10 (USB DAC/amp):

http://www.ibasso.com/en/products/show.asp?ID=39

http://www.head-fi.org/t/628374/sam...-usb-micro-b-male-to-mini-b-male#post_8735134

. iBasso D12 (USB DAC/amp):

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

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

. iBasso DB2 using USB Audio Recorder PRO:

http://www.ibasso.com/en/products/show.asp?ID=71

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1035#post_8959039

. iQube v2 (USB DAC/amp):

http://www.i-qube.nl/index.php?id=24

http://xdaforums.com/showpost.php?p=31207282&postcount=1268

. JH Audio JH-3A (USB DSP/DAC/amp/JH16 CIEM):

http://www.jhaudio.com/product/jh-3a-dsp-amp-jh16-pro-custom-ear-monitor

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/585#post_8799910

. Jabra GN 5035 (USB headset):

http://reviews.cnet.com/headsets/jabra-gn5035-headset/4505-13831_7-32462996.html

http://xdaforums.com/showpost.php?p=33203364&postcount=1368

. KingRex UD-01:

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

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

. Leckerton UHA-4 (USB DAC/amp):

http://www.leckertonaudio.com/products/uha-4/

http://www.head-fi.org/t/536982/leckerton-audio-slimline-uha-4/1020#post_8773152

. Leckerton UHA-6S MKII (USB DAC/amp):

http://www.leckertonaudio.com/products/uha-6s-mkii/

http://www.head-fi.org/t/602493/new...essions-added-july-20th-2012/435#post_8698006

. Logitech wíreless gaming headset G930 (USB wireless headset):

http://www.logitech.com/en-gb/product/7248?crid=721

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1215#post_9004830

. M-Audio Duo USB Audio Interface:

http://www.soundonsound.com/sos/oct02/articles/maudio.asp

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/540#post_8788814

. Matrix Mini-i (USB DAC/amp):

http://www.headfonia.com/matrix-mini-i-balanced-dac/

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/465#post_8768166

. Meier Audio Cantate.2 (USB DAC/amp):

http://www.head-fi.org/products/meier-audio-corda-cantate-2

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/660#post_8820899

. 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

. Microsoft LifeChat LX-3000 (USB headset):

http://www.microsoft.com/hardware/en-au/p/lifechat-lx-3000/JUG-00003

http://xdaforums.com/showpost.php?p=32899845&postcount=1355

. MyST 1866 PortaDAC (USB DAC/amp):

http://www.head-fi.org/t/616889/mys...xial-usb-dac-headphone-amp-impressions-thread

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/795#post_8852573

. NuForce Icon HDP (USB DAC/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

. NuForce Icon Mobile (USB DAC/amp):

http://www.6moons.com/audioreviews/nuforce10/mobile.html

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/435#post_8759826

. NuForce Icon uDAC-2 (USB DAC/amp):

http://www.digitaltrends.com/headphone-amplifier-reviews/nuforce-icon-udac-2-review/

http://xdaforums.com/showpost.php?p=35266076&postcount=17

. 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

http://www.head-fi.org/t/628374/sam...b-micro-b-male-to-mini-b-male/30#post_8939722

. 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

http://www.facebook.com/permalink.php?story_fbid=410941392302962&id=164588276945555

. 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

. RSA Intruder (USB DAC/amp):

http://www.raysamuelsaudio.com/products/intruder

http://www.head-fi.org/t/627080/new-balanced-portable-amp-from-rsa-w-dac/30#post_8781567

. RSA Predator (USB DAC/amp):

http://www.raysamuelsaudio.com/products/predator

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/150#post_8538933

. Sony PHA-1 (USB DAC/amp):

http://www.head-fi.org/t/624676/sony-pha-1-portable-dac-amp

http://www.head-fi.org/t/645086/samsung-galaxy-s3-and-hd598s#post_9033830

. Stoner Acoustics UD100:

http://stoneracoustics.blogspot.fr/

http://forum.lowyat.net/index.php?showtopic=2452730&st=160&p=54596977&#entry54596977

. Syba SD-AUD20101:

http://www.sybausa.com/productInfo.php?iid=1191

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/375#post_8736082

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

http://www.head-fi.org/t/636606/topping-d1-mark-2-review

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

. Topping D2 (USB DAC/amp):

http://www.mightybigword.com/tnt/2012/03/topping-d2-dac-review/

http://xdaforums.com/showpost.php?p=32920194&postcount=1357

. 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

. Turtle Beach Audio Advantage Micro II:

http://linkai8424.blogspot.fr/2011/03/turtle-beach-audio-advantage-micro-ii.html

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1155#post_8978516

. Unique Melody PP6 using USB Audio Recorder PRO (USB DSP/DAC/amp/CIEM):

http://www.custom-iem.com/um-platform-pure-pp6-p-670.html

http://www.head-fi.org/t/613417/uni...ion-appreciation-tour-thread/360#post_8965862

. VentureCraft Go-Dap X (USB DAC/amp): USB cable provided by VentureCraft

http://venturecraft.jp/gadget_en/gdx.php

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/315#post_8708233

. xDuoo XP-1 (USB DAC/amp):

http://www.xduoo.com/xduoo/ProductShow.asp?ID=47

http://www.head-fi.org/t/642504/xdu...ng-portable-dac-and-amp-units/45#post_9176225

The compatibility list of Android devices / USB DAC is regularly updated at the following topic:

Android phones and USB DACs