Like I said, I gave two 6105's and s full size wavebox. My power supplies all have the jumper technology. I just bought them 2 months ago and now I see you have a jumper less power supply. Is that the only change?  Can I upgrade to the new "electronic power" supply?  I also have a tunze controller as well. What are the benefits to this new model?  Also, did I mention how disapointed I am that I did not get the newer model??