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Android phones and USB DACs - Page 116

post #1726 of 5144

Your best bet would be looking for a kernel with USB audio. I am sure there is one.

post #1727 of 5144
Samsung Galaxy S3 & Graham Slee Bitzie USB DAC with analogue output stage volume control:
 
"The only great sounding USB DAC to work with a mobile phone...
Plug & play compatible with Samsung Galaxy S3 running Android Jellybean. Over 7 hours continuous playing time!"
 
"OK, quality into high impedance headphones? HD250II: too good! K701: I'm shocked! HD800: almost very natural! All three very revealing... HD800 doing guitar string slides and moist mouth vocals extremely real."
 
 

 

 

 
"It's also got an output stage... yes AN OUTPUT STAGE! Which drives headphones direct - any impedance - with only 18 Ohms output impedance. It does not go direct from the DAC outs without any filtering like most do! The output has a thing called gain and it also has proper sampling frequency filtering that's effective and yes it's fast (some people call it PRAT but I call it fast)  It also does line level, and there is a 3 position switch hidden away under the USB socket to let you preset the volume to suit - and you can press it to mute - and press it again to un-mute... snazzy!"
 
"The volume control is between the analogue output of the DAC chip and the input of the analogue output stage. Therefore it can be used to set the volume of the headphones or the volume of the amp it's serving depending on use.
 
The output voltage is 0 - 2V.  It provides 9dB extra sound pressure level to 32 Ohm headphones (e.g. 107dB max SPL from Grado headphones with suffix i), 11dB extra sound pressure level into 300 Ohm headphones (e.g. 113dB max SPL from HD800's), and 12dB extra sound pressure level into 62 Ohm headphones (e.g. 117dB max SPL from AKG K701's). Roughly the equivalent of the Voyager.
 
The analogue stage also contains a low pass filter (LPF) having a third order Butterworth filter slope, acting above the audio spectrum which is facilitated by the DAC using 8Fs oversampling. The filter being designed to produce a SQ and sound stage not dissimilar to a Reflex M"
 
"The Bitzie USB-DAC (external sound-card) is a USB powered device which automatically recognises any USB audio bit depth and sampling frequency. It then sends it in S/PDIF format to a coaxial out (phono socket) or optical transmitter at "CD quality" (16/44.1 (48)), and it also has an analogue audio output. The analogue audio output is derived from an 8Fs oversampling D-A converter and presented to an Alps manual rotary volume control and then to a low pass filter (LPF) amplifier with +6dB gain. The output of this amplifier is presented on two jacks: a mini jack and a full size 1/4" jack in parallel. A pair of headphones can be connected to the jack suitable for the headphone plug. The amplifier which is short circuit proof will drive any headphone impedance. Alternatively using a jack to 2 x phono adapter, the analogue output may be used to drive an amplifier.
 
The S/PDIF outputs of the Bitzie USB DAC have been tested into the "big DAC" prototype S/PDIF coaxial and optical inputs, and the analogue outputs into the Proprius monoblock power amplifiers. The analogue outputs have also been tested using HD800, HD250II, HD600, SR60, SR80, K701, A-700 and A-900 headphones. All work exceedingly well."
post #1728 of 5144
Edit
Edited by jblparisi - 2/15/13 at 9:34pm
post #1729 of 5144
Quote:
Originally Posted by DanBa View Post


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

What is 'digital USB audio out'?

Also, will the USB/DAC still work if I root my AT&T S3 and flash a custom ROM?
If so, which ROMs will this work with?
Thanks!
Edited by akong - 2/16/13 at 11:56am
post #1730 of 5144
Quote:
Originally Posted by akong View Post

What is 'digital USB audio out'?

Also, will the USB/DAC still work if I root my S3 and flash a custom ROM?
If so, which ROMs will this work with?
Thanks!
Depend which rom you are using if they have a custom kernel ..
post #1731 of 5144
Quote:
Originally Posted by meiaen View Post



Depend which rom you are using if they have a custom kernel ..

Right. So which custom kernels would work? I'm on an AT&T S3. 

post #1732 of 5144

it works on stock you know that!

post #1733 of 5144
Lol yeah, I know, stock's just ugly as hell :P
post #1734 of 5144
Quote:
Originally Posted by akong View Post

Lol yeah, I know, stock's just ugly as hell :P
Stock is alright you cant tweak it but still fast depending on what rom ur using and im actually not familiar on s3
post #1735 of 5144

I'm considering getting a GO-DAP X from Venturecraft, but wondering if there are any good ways of attaching it to the phone without inhibiting access to the home, back and menu keys on the samsung galaxy SIII?

post #1736 of 5144
Quote:
Originally Posted by aerodrew View Post

I'm considering getting a GO-DAP X from Venturecraft, but wondering if there are any good ways of attaching it to the phone without inhibiting access to the home, back and menu keys on the samsung galaxy SIII?

3M Grip tape. The Apex Glacier comes with it and it works quite well.
post #1737 of 5144
I need to make an amendment lol.
The fiio e17 DOES work with the Sony tablet s1.
I tried using an adaptor that wasn't an otg.

So I have found both the S1 and the Archos G9 > usb recorder pro > fiio e17 works just fine smily_headphones1.gif
post #1738 of 5144

Sony Xperia Z & USB audio:

http://www.engadget.com/2013/01/07/sony-xperia-z-hands-on-ces-2013/

 

Xperia Z > digital USB audio out >> FiiO E17 USB DAC/amp >> headphones

 

 

post #1739 of 5144
Thread Starter 
Quote:
Originally Posted by Paul Graham View Post

I need to make an amendment lol.
The fiio e17 DOES work with the Sony tablet s1.
I tried using an adaptor that wasn't an otg.

So I have found both the S1 and the Archos G9 > usb recorder pro > fiio e17 works just fine smily_headphones1.gif

 

My G9 didn't require the USB Audio Recorder app to work with my E17.

post #1740 of 5144

Just updated my original Galaxy Note (N7000) to the official Jellybean rom that's just been relesed. Doesn't support USB audio mad.gif

 

USB Audio Recorder doesn't work either.


Edited by Nixon - 2/18/13 at 4:29pm
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