G'day. I've acquired from a friend an old SS amp. On the back are two sockets for (separate I guess) footswitches. One for channel and one for the stereo chorus. Can I plug in any generic type footswitch? I doubt very much I'd get an original one or even find out what an original one would be like as the amp is just a generic, made in Korea in the late 80s "SoundLab" branded thing. It's nothing flash but sounds pretty gnarly and would be ok to just leave at my mate's place for jams. Any thoughts folks?