Hello John,
here is a general answer, as I pointed out I do not want to use this forum to pimp stuff..
The JU series of amp was made from 1996 to 2000, about 300 or so, it failed to a point to multiply a very easy amp concept, adopted from the original Oahu lap steel amp made in the 50s in Chicago by the Valco company.
There were several problems with manufacturing (finding capable people for assembly) and distribution, finally when my business partner during that time had to pull out of the company because of personal reasons, we closed it down.
During the same time the V72 took off and I went on an started a new company by myself...
I still do all service and warranty on the Jester ones, each year we build 10 units or so, now under the AMI logo...
For more details you want to shoot Fletcher an e-mail, or PM me...
Hope that helps