bob prohaska wrote:
> Has anybody noticed a material difference in audio quality between
> the headphone jack and what comes out of the HDMI port?
>

It has been discussed such as here
https://raspberrypi.stackexchange.com/questions/47699/sound-output-of-the-raspb
erry-pi


(that also has a number of useful links)

The problem is the limitations of how RPi generates the analog audio --
'tacky' for an audiophile.

> Obviously, a display with a poor audio circuit can corrupt a good
> signal, but assuming the display is "good enough" does it matter
> which is used?

Someone suggested that if you want really good audio, to use a card for
the GPIO header:
https://elinux.org/index.php?title=RPi_Expansion_Boards#Sound

RPi Expansion Boards
2.10 Sound

     2.10.1 Audio Injector zero sound card
     2.10.2 Audio Injector stereo sound card
     2.10.3 Audio Injector Octo sound card
     2.10.4 Wolfson sound card
     2.10.5 HiFiBerry DAC
     2.10.6 HiFiBerry Digi
     2.10.7 Raspi-T-DAC
     2.10.8 Pisound


--
Mike Easter

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