resolution-the listening side
Resolution is a matter of being able to see something or hear something in it's absolute state. Just because a signal language has assigned numbers this doesn't mean you are hearing it with your audio system.
I'm a stickler for soundstage size, here's why.
Being someone who has done the recording as well as the playback I've seen many cases where the audio recorded is not what the end user is hearing. It's kinda hard to get your mind around cause we live in an age where we are being told that we have more revealing systems than ever, but these are only words used to sell, and to convince the buyer to buy, many times. Fact is there are 3 extremely important parts to your audio chain and if any one of them is not up to the task you are going to come up short in the revealing department (electrical, mechanical, acoustical). Here's where things get tricky. Every recording made has it's own signature. A signature is a vibratory code that is unique to that recording. This code is made up of values called frequencies, and the pressure (vibrations) these frequencies are being shaped by. Together these become what we know as the source signal (the recording). A frequency is not a note. It's part of the translation scale of measurement that relates to cycles. A note is far more complex and uses both the cycles and pressure in it's formation. Where a frequency is a measured unit a note has flavors and textures. Example, same note played on different instruments sound different. Or this one, same note played back on different audio equipment sounds different. Every electrical system, mechanical system and acoustical environment plays that note different.
Every part that contributes to the audio signal and it's pathway from the mic to your ear has it's say so with the sound. Stop a second and think about it. You have never heard the same music played on two different playback systems sound identical. It's not going to happen and no matter how much someone has told you your buying reference quality gear unless you are able to produce the real space, real size of a recording you will not be listening to "the absolute sound". Fact is with every recording having it's own code (signature) in order to play it back in full you would need to be able to tune that recording in to it's particular set of values. Again stop for a few minutes and play one minute of 10 or so different recordings and you will hear how dramatically different they are from each other. Your system doesn't audio adjust each time a recording is played. Your system like each recording has one setting and is interpreting every piece of music according to that setting.
As you play your music some of it will or should sound bigger than other recordings, and some smaller, but if you are listening to a typical sized audiophile soundstage that is 10w X 6d X 7h or even double that size you are not playing all the imformation on that recording. Play through 10 other recordings now. Hear how some sound bright and some sound boomy and yet like the 3 bears some sound just right? This has as much to do with your system as it does the recording. Truth is, if you took the time to dial in that specific recordings "code" it's soundstage would grow and as we have noticed the tonal balance EQ's itself the closer the info gets to it's real size. This only makes sense when you think about what happens to music when it is squeezed. Parts of the music gets covered up or shifted in pitch because of the colapsing of the space. This forces the response to move from linear to ill-proportional.
Once again I don't want to put words in your ears so listen to your best sounding recordings. Notice how they have a bigger soundstage than the recordings that you don't like as well? This is because your, with the bigger sound, hearing more of the recording.
Resolution is not about how you can focus on one small part of a recording but about how you can get closer to what is really going on with that recording and that means size and space. The space of your soundstage is the recording. There really is no such thing as a revealing system that cast a small soundstage. This is an audiophile myth and frankly an excuse that some use who don't have systems that can open up the sound of a recording. When that soundstage starts to reach close to full size you will see all kinds of things in the music that you didn't know was there and you will also notice that the recording goes as much front to back as it does side to side, plus the height will gain greatly as well as a 360 presentation that includes the stage going behind you.