just as a side-bar to this question- WHAT IF the only BIG Improvements you could get over what you have on (let us say) redbook cd's- which i have the most of to begin with, is a LOUDER system, with more watts, more spl's, and so on? I.E.-
i don't think i've heard a signifcant qualitative improvement over the system
i heard at a stereophile show Many years ago featuring sonus faber extrema speakers and an SME-30 turntable playing AC Jobim records. the rest of the system was good but nothing extravagant- a copeland preamp, an audio research cdp and solid state stereo amplifier, un-remarkable wires, and way-less than optimal room acoustics.
the MBL room was very nice too with surround-sound, but that was about it.
i more recently heard the Wilson Alexandria's (series-1) and they imaged great and sounded really transparent at a hefty volume level, but i didn't find them any more enjoyable or musically satisfying.
OF COURSE all of this is limited to my perceptions and what components i've had at home (eggleston andras and now von schweikert vr-9's- more detailed, more bass) but AGAIN not more musical than the andra's).
i have an emm lab cdsa cdp in the living room which is darn good, but in another room i am still listening to a Mark Levinson 390s CDP which ALSO sounds very organic, very satisfying, over a (little) pair of sonus faber guarneri homage speakers. SO, anybody out there with similar "Ear-Genes" to mine may want to re-assess dumping their mark levinson digital gear or their egglestons, sonus fabers, Rowland preamps, etc. not only were these components very good in their day, but i think that perhaps until one of them breaks down, there's more than likely only subtle improvements to be had (at the volume levels you're already happy listening to).
of course i would STILL like to hear some Wilson Sasha's, or Rockport ANTARES, and/or a Soulution preamp/amp combination. AND ALSO (of course)
HI-RESOLUTION sound files of Mozart Piano Concertos.
as a certified gearaholic, i like to keep an open mind...