You've got a good point Jim, infact, I wouldn't want it to be round at all.
I'm pretty stingy with my pre-cut round panel openings. I'd much prefer a
small rectangular format that could be either vertically or horizontally
orientted such as PS's intercom only products. Most panels have such a
space available, say 1" x 3".

Avionics Innovations seems to be mixing and matching several entertainment
sources into different products. www.avionicsinnovations.com

Jim