here is a picture I found (was sent to me by a friend....) of a Setton transcoder or something of the like, model RS-80.

Note the white thing with BOTH setton and pioneer logos. maybe Setton and Pioneer did have a connection???

the transcoder (thing with the red switch) really fascinates me. Note the RS-80 logo and the setton logo on it.

Emaidel: can you make anything of it?