A 1958 Philips AG9014 2 x 10 Watt valve driving an efficient speaker like Wilson, Klipsch, Tannoy or Lowther would equal a Steinway Grand from 10 metres distance. The same with a Quad, Martin Logan or AudioStatic electrostatic panel will take 300 Watts.
More Power Part II
Hi, problem solved. I am going to get the new KEF powered subwoofer. I am very lucky that I suffer from confirmation bias. If I think about an read all the reviews on stuff I want to buy and then I finally get it, it sounds Great!. The power question comes from me reading someplace that to reproduce the sound level of a real piano takes 200 Watts. So I will not feel that I am hearing the full experience unless my amps have 200 watts or more. Thanks so much for all the answers to my question. You guys do good work and plenty of it !. Regards Pat O.