What kind of power supply does the MAB-303 use?
My second hand MAB-303 came without a power supply. Will Systems doesn't exist anymore so if you need an adapter I doubt you'll be able to get an original one. On the back there is a 15v AC adapter input. This is a rather odd voltage, most univeral adapter you get in stores only support voltages up to 12v, so you have to visit a specialized store to get one. Or buy it somewhere online. I don't know how much amperes it needs but I do know that 1000mA is not enough. I tried a 15v 1000mA adapter but the synth didn't turn on. I bought a 15-24v 4000mA univeral adapter at www.conrad.nl and it worked fine. I would suggest you buy one with plenty of amperes (note: it doesn't matter if you buy an adapter with even higher amperes because an electrical device only draws what it needs).