Time to get this site upgraded, so we are passing the hat around. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html
We appreciate your help
in keeping this site going.
I found a page that lists the "A" designation as being for "Grey Filter Glass Faceplate" , so your right , the "A" does not seem to be for "Aluminized"
Threaded Mode