Mini,
Well I have to agree with Gerry! I have the same motors, run them on a 48vdc, 6 amp supply thru Stepperworld.com FET-3 boards. They are rated at 80vdc, and can handle up to 15 amp as supplied and can go higher with mosfits. They are priced at about 130.00 for a 3 axis board and they do sell a 4 axis (FET-4) as well. I just ordered some from them not too long ago and am very pleased.
Good Luck man and let me know how you make out,
Glen |