(Part of) the living room AV system, circa 1989...

With apologies for the poor quality of this old print, you can see the original switchbox sitting under one of my three Aiwa ADF-770 cassette decks — if you squint!

That's Danny Peary's 1986 Guide for the Film Fanatic I'm looking up from.

To my considerable surprise, I recently (July 2011) unearthed another old print, showing a somewhat better view (in the bottom right hand corner) of the original switchbox. The print was in dear Mama's collection over in the care-home.