Tony, I have a CUP36 from the site you mentioned. I would not recommend the unit. I bought one when I built my KX1 (#53) and it is a noise machine. I would inquire first if it has been improved over the past few years. If it hasn't, I'd leave it alone. The previously mentioned 3 amp unit from RatShak is superior based on my experience. 73 Gil NN4CW