What a load of xenophobic bunk... I'll have you know that we have a large collection tweako cultist lunatics screwing around with 1watt tube amps.. 
Power ouput is important. Particularly, if you have a large room to fill and you want bass... Again, there are frequent discussions about what speakers are a good match for naim, and typically the power hungry speakers are a non-starter.
Given that speakers dominate the the sound, speakers should be the guiding consideration in choosing a system, so why have the amplifiers ability limit the choice?
Sure they advertise every once in a while. Stereophile October 2002 pg 86 for instance. [I kept a copy of their recommended components issue to laugh at
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