The correct answer George, was ’no’: if two amps are making the same power into a given load, then the current is exactly the same. It was a trick question in a way. The trick was knowing Ohm’s law.
Now in this case:
Given the Magico’s impedance v phase graph, the amp with "ample current" will stay flatter in frequency response than the one that is "current challenged" especially at 50hz where impedance and -phase is at it’s worst.
- if the amp can make the power into the worst of the load then how much power will it make into loads that are not as difficult? The answer is ’less’.
So we can see that if a tube amp can make the power needed, it does not have to be a perfect voltage source to still get flat frequency response, as good as any solid state. Its simply has to be good enough to do that.
There is an issue here, the harder you make the amp work, the more distortion it will make. You can see this in the distortion vs frequency specs of all amplifiers. The distortion is audible too- in the form of increased brightness and hardness, caused by higher ordered harmonics to which the ear is keenly sensitive, as it uses them to sense sound pressure.
So a powerhouse amp might be able to drive some insane load, but there isn’t a reason related to high quality sound reproduction to do so. If you want the amp to strut its best, an easy load will have it making less distortion- it will sound more like music.
Regarding our amps, they were designed with intention to work with speakers that do not require feedback of the amp; this is done because a speaker that **does** require that of the amp will inherently never sound like real music- it will always sound like a hifi- maybe a really good one, but still a hifi instead of real music. See Norman Crowhurst, you can download his books from Pete Millet's website
http://www.tubebooks.org/technical_books_online.htm