Help Needed to Identify Sound Option

[Alan Tuttle <news001@macgeek.org>]

I have two of these guys, so I'd like to find out what they are.

It's a 1.5" by 2" printed circuit board with a mounting bracket for the
Apple IIgs backplane. It has two cables. One of the cables connect to
the audio port that's located at the front of the IIgs (7 pins). The
second cable plugs into the fan connector on the back of the machine (2
pins). And, it has the audio and fan connectors on the circuit board so
probably you can plug a fan or a Sonic Blaster into it.

The IC chip has the inscription "CA 324E", "H 9036", and an "H" which
looks very much like the Honda logo. On the solder side, it says "1988
Roger Wagner Publishing, Inc." and "FCC ID: HYORWIIGS"

Thank you for any info you could provide!