How much amplifier power do you really need?

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Interesting post, @Confused.  It agrees nicely with what Roger Sanders says in his white paper (which I know I've linked to before).

It appears Roger is making some pretty big assumptions.

Which assumptions in particular do you think invalidate his analysis?

Once again he, like other marketing geniuses, are taking things out of context.  At what point is 500W needed?  He doesn’t specifically say.  He is also pro solid-state so it stands to reason he would be biased in his remarks.  Although I am too, he is making a bigger case against SET amplifiers not other quality solid-state amplifiers making his point less considerable in general.

As I read it, his analysis about power requirement is based on straightforward, easily-verified measurements and does not depend on whether the amplifier is solid state or valve.  Calling Sanders a "marketing genius" is clearly intended to be derogatory, and does your argument no favours.

I suppose if I needed a little more confidence in my system I would lean on this white paper too.

What exactly are you referring to?