Hi All , I got chatting to a guy called Stan Rafkin at the Kirklees boat show a few weeks ago , he as loads of the JJC electronics gear and he reliably informed me that the slave will only work with a JJC master amp . The guy who ran JJC cannot be contacted he got so busy he moved production to China and the quality went down hill so he just packed up all together . So now you all know.
Regards Dave