Here's the C-Media chipset they are using:
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I suspect it works fine, and is cheap enough.
Has 16 bit stereo DAC's out to the headphones, but only a mono ADC in for the microphone.
So not a good choice to receive in quadrature for SDR radio.
Some of the high end soundcards claim to grab 24 bits in stereo.
You get 6 dB per bit, so a 16 bit ADC can have a max of 6*16=96 dB dynamic range.
Your mileage may vary, likely several LSB's of just noise in there.
Jerry, KE7ER
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On Thu, May 3, 2018 at 08:11 am, Rod Davis wrote:
The Startech USB dongles with the C-Media soundcard are pretty good quality, and low noise floor.
$14 at Newegg:
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