Chuck K posted:Brendan postedYou cannot buy the Proto Sound decoders to retrofit other engines, either, unless that has changed recently.Actually, you can. I don't know how long they have been selling them, but Protosound 3.0 conversion kits for steam or diesel/electric are readily available (but expensive). I haven't done one in S, but I know of people who have.
I know they have conversion kits to upgrade Proto 2 to 3.
Brendan