KVR Audio

DanBa · Post by **DanBa** » Sun Oct 21, 2012 9:26 am

Custom Stoner Acoustics UD100 based on 24-bit ESS Sabre conversion chip:
Tiny DAC, Big Sound - Impression of Stoner Acoustics UD100 vs. ODAC
http://stoneracoustics.blogspot.fr/

Samsung Galaxy S III > digital USB audio out >> USB OTG cable >> custom UD100 cable >> amp >> headphones

Samsung Galaxy S III > digital USB audio out >> USB OTG cable >> UD100 USB DAC >> Pico Slim amp >> FitEar TO GO! 334

Samsung Galaxy S III > digital USB audio out >> USB OTG cable >> HeadStage USB DAC cable >> RSA Protector amp >> JH Audio JH13

DanBa · Post by **DanBa** » Sat Oct 27, 2012 11:56 am

About Android-specific USB audio:
"As of now, the standard Android releases do not include USB host support. Samsung decided to add this feature on their own. The Android folks are working on a funky USB dock protocol that works over USB (sort of like what Apple does) that, frankly, most of us developers think is stupid. There is certainly a push to put USB host support for standard devices (like audio, keyboards, etc.) into the normal Android releases."
[Pete Millett, design engineer from Apex Hi-Fi]
Apex Glacier amp/dac review and appreciation thread

DanBa · Post by **DanBa** » Sun Oct 28, 2012 6:16 pm

Samsung Galaxy S III & Apex Glacier:
http://www.ttvjaudio.com/Apex_High_Fi_A ... 000010.htm
http://www.head-fi.org/t/632019/apex-gl ... st_8814974

Galaxy S III > digital USB audio out >> USB OTG cable >> Apex Glacier USB DAC/amp

Galaxy S III : 13,6 cm * 7 cm * 0,8 cm
Apex Glacier : 11,4 cm * 6,5 cm * 0,9 cm

DanBa · Post by **DanBa** » Sat Nov 10, 2012 12:53 pm

Galaxy Note II & Headstage Lyrix Pro USB total :
http://www.head-fi.org/t/595071/android ... st_8854850

stock Galaxy Note II > digital USB audio out >> USB OTG cable (micro-A plug inserted in the Note II) >> Headstage Lyrix Pro USB total USB DAC/amp >> Beyerdynamic DT-770 Premium

mojofunk · Post by **mojofunk** » Sat Nov 10, 2012 6:45 pm

I'm sorry, I've just got to say it -

WTF is up with this thread?

danbroad · Post by **danbroad** » Sat Nov 10, 2012 6:54 pm

Me too. Maybe I'm missing the point here, but it seems like a huge amount of effort when you could just buy an iPhone?

DanBa · Post by **DanBa** » Sun Nov 11, 2012 12:56 am

You have the right to buy an Apple iPhone and one of a few expensive iPhone-compliant USB DACs which are not compatible with your PC or your Apple Mac.
http://www.aloaudio.com/cypher-labs-alg ... -pre-order
http://www.sweetwater.com/store/detail/HPP1
http://v-moda.com/vamp/
...

The Apple authentication coprocessor imposed in every iPhone-compliant USB DAC won't improve the sound quality of the DAC, but it's certainly the root cause of the expensive price.

mojofunk · Post by **mojofunk** » Sun Nov 11, 2012 2:38 am

Oh, well of course - silly me! That clears everything up!

DanBa · Post by **DanBa** » Tue Nov 20, 2012 8:50 pm

Samsung Galaxy S III & planar magnetic Audeze LCD-2:
http://www.head-fi.org/t/595071/android ... st_8873554

stock Galaxy S III > digital USB audio out >> USB OTG cable (micro-A plug inserted in the Note II) >> RSA Intruder USB DAC/amp >> Audeze LCD-2 headphones

"The LCD-2's sound phenomenal in balanced mode off the Intruder... Yum."

javahut · Post by **javahut** » Sat Dec 01, 2012 1:38 am

mojofunk wrote:Oh, well of course - silly me! That clears everything up!

That's what Apple products are for... those for whom it's just too much to actually know how stuff works.

DanBa · Post by **DanBa** » Sat Dec 08, 2012 1:48 pm

The us$43 Samsung Galaxy S3 + Car Stereo Upgrade for WAaaY better sound quality!
http://www.head-fi.org/t/639883/the-43- ... nd-quality

Galaxy S3 > digital USB audio out >> "USB OTG" cable >> Behringer UCA202 USB DAC >> car stereo amp >> car stereo speakers

"...
And so what are the results you ask?

HOLY MOLY!
Not only is the audio quality MUCH improved, but the sound is so CLEAN now. No clicks, burps, or any other weird background noises. Just straight CD quality background silence.
Even my GPS voice sounds prettier. hahah
Bass is tighter and deeper. Highs are more revealing. Everything is so much better that a novice could tell it sounds better.

And yes, GPS navigation works perfectly. If I'm listening to Pandora or an MP3 and my GPS needs to talk, then my music will go several db quieter and GPS will speak up, then afterwards the music will automatically go back to full volume.

Also, one thing I hated about Bluetooth was everytime I turned my car off for just a minute, when I would power it back on the Bluetooth would not consistently reconnect. Well, this USB-OTG has been very consistent for me so far. Music just picks back up where it left off at and is fairly quick to do so.

Cons? Well, I haven't tested hands free calling yet. But I'm told it doesn't work with this USB-OTG to DAC configuration. Maybe there is a bluetooth solution for that. I dunno? And AOSP does not yet support DACs.

Pros? Freakin everything.

Pics are below.

Here is the DAC and the USB-OTG cable:

This is how you configure the DAC.
You can probably also use the headphones output instead of the stereo RCA, but I didn't try it.

I wired up my USB-OTG cable to my iBOLT dock. It comes up through my dash defrost vents.

This is what the three connectors on the USB-OTG cable look like:

Here is the DAC being wired up. I taped up the non-used RCA's to prevent anything bugging with them.

I wrapped up the DAC with DUCT tape.
Not sure how or why the pic is sideways. It looks normal on my desktop.

Hid it behind my dash.

Here is the USB-OTG cable with my iBOLT dock.

The car stereo w/audio cable attached. Some car stereos have the 3.5mm connector in the back. Or a dual-RCA input. I'd prefer one of those to have a cleaner install. Maybe someday I'll upgrade my car stereo.

And here is the finished product. My S3 docked, charging and outputing beautiful digital music!

.." [CZ Eddie]

DanBa · Post by **DanBa** » Sun Dec 23, 2012 1:22 am

Unique Melody Platform Pure 6 & Samsung Galaxy S3 using USB Audio Recorder PRO:
http://www.head-fi.org/t/613417/unique- ... st_8965862

music stored on stock Galaxy S3 > USB Audio Recorder PRO player > digital USB audio out >> "USB OTG" cable >> Unique Melody PP6 > custom IEM

"You have no idea how happy I am right now."

TristezaOrange · Post by **TristezaOrange** » Sun Dec 23, 2012 1:42 am

danbroad wrote: Maybe I'm missing the point here, but it seems like a huge amount of effort when you could just buy an iPhone?

Maybe you want to use widgets? Set default applications? Have actual communication between programs? Install apps from wherever you want and test betas? Maybe you want to get fancy and set a live wallpaper? Maybe you'd really like to use replacement keyboards such as Swype and Swift key?

Yeah, why not just get an iPhone?

DanBa · Post by **DanBa** » Tue Dec 25, 2012 6:27 pm

24-bit / 96kHz lossless music and USB Audio Recoder PRO:
https://play.google.com/store/apps/deta ... RlcnBybyJd
http://www.linnrecords.com/recording-highwire.aspx

music stored on Samsung Galaxy S3 > USB Audio Recorder PRO player >> ODAC >> amp >> headphones

stixman · Post by **stixman** » Tue Dec 25, 2012 6:42 pm

Anyone know of any plans of an audio midi interface for the android Kindle fire?

Request to Google to enable USB audio on Android smartphones/tablets