So, Even though I have steppers, I'm going to upgrade them to something a bit more powerful. 4.2Amp Steppers

But, How do I power this? I could get a 600watt power supply or I could get a transformer from Farnell and risk blowing myself up.

Just wondering the best way to power it, I'm guessing a few of you guys have them.

so how have you guys done it?