I don't know the specifics of you power supplies, but you can use one supply to run all your MP10s. You need one that has the same output voltage and 3 times the AMPs you exsisting supplies use. If your other items are the same voltage you can just add up the amps required to run everything. You can still fo it if the voltage is different but you would need to step up or down the voltage and is probably easier to get a separate power supply for those items. The disadvantage is if you power supply fails not all 3 MP10s are dead, so i would use at least 2 seperate supplies.