Mike, I can recommend the Pro Audio Engineering Px33. It is a small 4 amp switcher that is RFI-free. It works well with either the KX2 or KX3 - likely the K2/10 or K1 as well. 73, Don W3FPR On 3/21/2017 9:25 AM, Michael Raskin wrote: > Can someone recommend a small AC power supply for the KX2?