Dangelod
>>Seems like all high quality amps clearly describe output in watts , with the best amps doubling output as impedance is is halved.<<
You dont actually think that do you?
Nearly every body is aware of the term watts as it applies to an amps output . Even novices & beginners, to one extent or another. Some will even say an amp is better than another due to the watts it puts out . But such statements are quite shortsighted and very inexperienced.
Watt is the representation of the relationships between curren, voltage, and resistance or load.
Watts = an easier way to describe one facet of amplification usually . Its not the end all be all of amps however. I wish it were that simple!
From a somewhat less naive perspective, it could be said one amp is subjectively better than another, without respect to the power output characteristics, judging by the sound of it instead . Or by how much it sells for Or by its design topology Or merely by its classification, A; A/B; D; Tube; SS; Transformer coupled, truly balanced, or even its output devices.
However, there are other deliberations which will conclude if one amp is bested by some other not purely by its numbers.
Whether or not an amplifier doubles up its power output as impedance is halved, is one thing . Maybe a mechanical need or maybe not, for some, but as the sound being produced is of paramount import, how it produces power should not be the singular consideration or even a thoughtful way to categorize which amp is better than another at all.
When the specs of an amplifier gains more respect than does its voice within reasonable thought to the application, inordinate frustration and suffering may ensue due to the lack of synergy any old amp will yield once set into a finely tuned existing setup, just because its power doubles down!
Still common ground needs be in place so all can speak audio-ese, at least a little. Amp makers start saying this one puts out 5.5 A or 85 V, and darn few will be able to apply such info as they seek the right sound/amp for their intended purposes. So they use a commonly known term more can relate to with which to somewhat better position their power products into.
It is indeed about far more than the amount of watts on tap very often. Usually it is about what kind of watts, instead.