A couple roadking ??

[lpwcruzr]

I've got some roadking questions. What is the difference between the I and II versions of this amp. What changes were made and when?

I'm curious as to just how much switching a channel to the el34 power tubes really changes the sound. Is there really that big of a difference in sound with this option? It's still the same preamp so I'm wondering if paying for this option is really worth it over just buying a roadster. There aren't many roadkings around here for me to try out. I do like the roadster however.