Originally Posted by stv014
Well, then high impedance is worse than low impedance in the same way CD is worse than vinyl (and sometimes even good cassette tape), because it tends to have very limited dynamic range, emphasized treble, and heavy distortion. Correlation is not causation. Of course you are right that to the consumer it ultimately does not matter why the difference is there. Then again, even if you find a statistical difference that exists for whatever reason, is it enough to cause the high impedance headphones to have statistically higher amount of frequency response variations with a realistic output impedance ? Because that is what really matters from a consumer's point of view in the end.
I've clearly opened the can of worms here.
I've never stated that response variations are related to impedance variations per se, except when the driving impedance is too high, a condition that is unlikely given the statistical trend that shows that the typical models with larger impedance variations are higher impedance where it has no impact.
Perhaps I'm at fault here for not making the point clear, though I've tried now several times. I've mentioned something that while true, doesn't matter.
Look, it doesn't matter. I've found something that is true, and may be hard for you to accept, but I've said now several times, it doesn't matter. What does matter is that a headphone amplifier has a low source impedance. And if it does, these variations don't matter.
I'm pretty sure we agree, and now we're just arm wrestling. I do appreciate the smily, but when you post stuff like that in forums, people are going to take it a statement that has validity. We're dealing with folks that are forming opinions. Somebody's going to take that out of context, and ignore the indication that you're being sarcastic.
And, finally, I never said high impedance is worse than low impedance. It isn't.