This evening I received the gk 700rb II amp head that I had previously ordered. All was going well while I was setting it up, however after a few minutes of playing the amp popped and started smoking out of the top. I immediately turned off the power and unplugged the amp, however I'm not too sure where to go from here. What is the best way to see if it is actually fried? and if it is, is there any way that I could get in touch with Gallien-Krueger, in regards to repairs? Thanks very much.