Alright, you didn't mean it was the highest authority, just that there is no higher authority than the source signal.
many audiophiles seem to think they report to a higher authority than the source signal
I hope I got that right this time. OK then, yours is a valid perspective. It is one close to that of the professional world. Simply put, remove as many variables as possible and listen to what's in the recording and what's in the recording only. It even shows in your chosen approach. You like listening with headphones and you like listening in the very nearfield as though you were sitting at a mixing desk. Ok fair enough. While you will actually never here what the engineer heard nor will you ever know what he intended, you did do away with quite a few areas that are often expensive to fix.
I know you can see it coming so I'll get right to it. First the revered signal while hewing as close to it as possible sadly exists in the machine and in the machine only. Viewed with even the highest resolution on a DAW what you will see is a representation of voltage swings. Upon transduction it has been totally transformed. It is no longer electricity it is now kinetic energy transmitted from transducer material to all air and solids around it. It's gone. What's left are (you'll love this my digital loving friend) analogous air pressure swings. I'd like to think I'm a pretty pragmatic guy.
Given these facts I find it difficult to subscribe to your assertion that the signal is the only reference. The same track could have been sent to replicating plants all over the world. Your CD of KOB proudly made in the USA is not the same as my humbly Philippine made one. I'm not knocking my country but I have heard both and one was clearly better than the other. Even at this early stage you and I have two different versions of the signal that must be revered. We haven't even gotten to our CD trays yet! Your rig is going to do something to that signal and it will be different from what mine does. Owing to the fact that neither of us have perfect rigs again we have two different versions. The irony is that we will never ever, ever, ever, ever, know if we've got it right because you can't hear a signal you can only ever here how it's been mangled by the amplification-loudspeaker-acoustic environment pyramid. Take a look at Ethan's treated FR vs non-treated FR graph if you need proof. So a big tsk,tsk,tsk to anybody that insists his way is truer to the signal than another.
It gets worse. The producer and engineers job is to come out with products that first of all work and second of all people will like enough to buy. If you examine the typical work flow for popular music and exclude for the moment "audiophile" recordings. You will find that they perform mixdowns on purposely dumbed down monitoring systems by virtue of using let us say "less than ideal" monitors. NS-10 and Auratones anyone? Why? They want to make sure it will sound as best it can with mass market speakers but ESPECIALLY in cars. Many producers actually go grab a dub and drive around before final approval. Ouch!
Wanna hear the inside scoop on the loudness wars? Well that's it. The greater majority of radio play is on the road. Radio play drives sales. That track had better cut through road noise if they ever want a return on investment. It is sad but true. Counter intuitive as it sounds, the headphone wearing iPod generation may actually help reverse the trend.
So while it is a valid perspective as well as one that is economical, I myself choose to report to a higher authority than the signal. Now if that makes me a subjectivist despite my obvious love for the technical aspect of music production, so be it.