Rowland vs Rowland

I just bought the Rowland model 6. Although it is 10 years old is is by far the best amp I have owned. I am driving the new Von Scweikert VR-7SE. They replaced the Manley 250's and the difference was stunning. Unbelievable deep tight bass, better mids and highs. I have them plugged into the ac and haven't used the batteries yet. Should I consider the upgrade if its possible with this Model?

Thanks audiobugged. These are the most powerful sounding amps. Your right it was an ear opening experience and have had nothing close to this control of a speaker. A major surprise