Yes 2 to 5, maybe 6 pin available, various companies make them, they are used as microphone plugs and on things like soldering stations. I used them between my external power supply and Technics TT (From Maplins)

One point to note, the fewer the pins in the connector, the larger diameter the pins/recepticals and therefore the larger their current carrying capacity, so check that the spec for the ones you intend using meets your amperage requirement. Two pin carry the most current so 2x2pin is better than 1x4pin for current capacity etc.