cough ... cough.... a clear case of RTFM going on by ME here.
Clearly in the UL hookup, the PDF listed in the sticky part of this thread says that in this mode, I cannot use an Ipod to drive it, by extension, that applies to an iPhone as well.
However, there are measurements listed for 7W in the manual. I read that to be PER Chanel, so a Celm in UL with 6L6GC = ~14W ??