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ApplePi DAC w/ Volume-Clocker Measurements

orchardaudio

Senior Member
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#1
I just wanted to make a comprehensive post of all measurements, of the ApplePi DAC and Volume-Clocker combo.

SNR A-Weighted (XLR):
1540949963620.png


SNR no-weighting (XLR):
1540950454562.png


SINAD (XLR):
1540948660662.png


Dynamic Range A-Weighted (XRL):
1540948579268.png


Dynamic Range no-weighting (XRL):
1540950582862.png


THD+N vs Level (XLR):
1540949733501.png


IMD vs Level (XRL):
1540948481426.png


Frequency Response (XLR):
1541723568978.png


THD+N vs Frequency (XRL):
1540948163701.png


Linearity (XLR):
1540949611075.png


Jitter (XRL) - 256k FFT with 16 averages:
1540947938726.png


Crosstalk (XLR):
1541159871415.png


If there is something else that you need please post and I will update.
 
Last edited:

derp1n

Senior Member
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May 28, 2018
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#2
Measurements without a-weighting.
 

pos

Addicted to Fun and Learning
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#5
That would be the Gala DAC...

@orchardaudio, could we get the same kind of measurements for the Gala? (including measurements with the SRC chip physically bypassed if possible, especially the jitter one)
 

restorer-john

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#6
Orchard, I suspect your frequency steps on the AP are perhaps too coarse at the end of the FR test. I cannot believe the D/A would be -6dB at 20KHz.

orchard.JPG


When are you going to update the specifications on your website to reflect the actual results your products can achieve?
 

Grave

Senior Member
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Jun 30, 2018
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#8
107.5, 109.5. That's a 2 dB difference in SINAD between channels, weird.
 
OP
orchardaudio

orchardaudio

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Thread Starter #9
Orchard, I suspect your frequency steps on the AP are perhaps too coarse at the end of the FR test. I cannot believe the D/A would be -6dB at 20KHz.
you are correct it is just a number of steps, that is the issue.

Here it is with more steps:
1541723520999.png
 
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