I've just measured my Sony DualShock 4 v2 controller and actually it's pretty decent! It's on par with cheaper Topping/SMSL devices and easly beating "audiophile" Audio-GD or Woo Audio products
DS4 headset output to Audient iD4 line in. No external load, just iD4 input. There is clipping at 0dBFS so testing was done at -1dBFS. Controller was connected to PC by USB cable. Bluetooth audio is supported just by official Sony wireless adapter, games run fine with generic bluetooth dongle and DS4Windows or Steam software. Controller is limited to 16 bit / 32kHz sampling rate. Frequency response is flat with -3dB point at 14kHz - sorry, no hires audio there
Idk, maybe higher sampling rates are available with Sony dongle.
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