CubieNOS for Cubieboard

High end DAC module for cubieboard

CubieNOS1_800

CubieNOS is what it sounds like. It’s a Non Oversampling (NOS) Dac. It’s designed by HIFI enthusiasts for enthusiasts and DIY people.

The idea is basic. Low number of components with a well thought out PCB design for shortest signal path possible. Early balanced stage in the digital signal path and fully balanced the whole way through with dual Philips D/A converters and a Burr Brown buffered output stage with enough power to drive low impedance headphones. And of course, no capacitors in signal path.

CubieNOS can be ordered in two different configurations. Since most of the digital music is recorded in 16bit/44.1 kHz we have adapted a D/A convertion design with this in our thought.
Version A of CubieNOS is a non oversampling DAC. Meaning, if input feed is 44.1 kHz, CubieNOS outputs 44.1 kHz.
Version B of CubieNOS resamples the audio to a fixed frequency at 176.4 kHz. Note that 176.4 kHz still is equally divisble to 44.1 kHz which in turn doesn’t add jitter to 44.1 kHz audio.

Our main focus is on best possible and natural sound and not numbers like total harmonic distortion. But there still many of you who are curious

Technical details

Version A:
Input up to 24bit (output up to 16bit)
No resampling up to 192 kHz
Output 4.7 Ω balanced
Frequency 4 Hz – 18 kHz, +0 -0.3dB
THD+N = 0.02% (1 kHz)

Version B:
Input up to 24bit (output up to 16bit)
Fixed resampling at 176.4 kHz
Output 4.7 Ω balanced
Frequency 4 Hz – 22 kHz, +0 -0.3dB
THD+N = 0.02% (1 kHz)

 

Buy it here:

http://shop.g2labs.org/index.php?id_product=1&controller=product

 

Output:
L/R Balanced XLR
L/R Unbalanced RCA
L/R Unbalanced headphones 2.54mm pin (header CON_1)
Alphanumeric displayport 2.54mm pin (header CON_2)

Optional:
Analog volume control 2.54mm pin (volume control module)

User manual:
http://shop.g2labs.org/index.php?controller=attachment&id_attachment=1

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