Audio

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Jack

  • 3.5mm headset TRRS (stereo audio and microphone) connector with automatic switch to go from OMTP to CTIA as seen here

Volume Wheel

  • Potentiometer to GPIO input in SoC, 10-Bit Resolution (allows software override of volume control)

Microphone

  • Microphone located at the left edge between keyboard and D-pad.

Speakers

  • Stereo speakers in base with tuned cavity behind them as per manufacturers' recommendations.
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