[Arlen Holder]

On Fri, 06 Nov 2020 20:22:52 -0500, Paul wrote:

o Where your sound controller is apparently an ADI AD1988A chip.
https://www.hardwaresecrets.com/datasheets/AD1988A_1988B.pdf

While mine is definitely the Realtek ALC888S sound controller chip:
o https://i.postimg.cc/44HsVbX0/48pinu6.jpg
https://www.hardwaresecrets.com/datasheets/ALC888S_DataSheet_1.2.pdf

They went to a lot of trouble to get a Stereo_Mix in there.

I do not understand that statement, where I'm not sure who "they" is,
and I'm not sure how you know what they did to get "Stereo Mix" in.

Assuming "they" is "Realtek", & looking at the Realtek ALC888S datasheet
https://www.hardwaresecrets.com/datasheets/ALC888S_DataSheet_1.2.pdf
(which I had to convert with ghostscript/ghostview in order to copy)
I see they never mentioned "stereo mix", per se, but did mention a "mixer"
"Two stereo ADCs support 16/20-bit PCM format, one for stereo microphone,
one for legacy mixer recording"
"Supports legacy analog mixer architecture"

And they mention the sound output jacks on my pc on the back & front:
"It provides ten DAC channels that simultaneously support 7.1 sound
playback, plus independent stereo sound output (multiple streaming)
through the front panel stereo outputs."

With respect to the analog pins, it says:
"All analog IO are input and output capable, and headphone amplifiers
are also integrated at each analog output."
"All analog jacks are stereo input and output re-tasking
for analog plug & play"

In summary, Realtek never once mentioned "Stereo Mix" in that datasheet,
but they do mention that the ALC888S supports a "legacy analog mixer".
--
See conversion tutorial below to enable copy & paste above:
o Tutorial for installing ghostscript/ghostview/pstoedit to remove PDF copy & password protection , downconvert, rotate pages, change paper sizes, fix corruption, extract text, etc.
https://groups.google.com/forum/#!topic/alt.comp.microsoft.windows/O7l0utRdJYk