This looks more like a $700-$800 question.
My experience with my stereo, with an outboard equalizer capable of "room correction" is this:
I still play with it occasionally, small adjustments to the bottom end (no subwoofer - the speakers are good to 30hz), or to assist really funky recordings (I download and listen to "amateur" recordings of live shows).
If the room correction is run on both channels equally - it gives a lot of boosts and cuts above the bass area, that messes up the tonal balance anywhere except where the calibration microphone was placed. The ear/brain works well at providing "adjustments" to keep things sounding right.
If run one channel at a time - then it really messes thing up, as the direct sound becomes unbalanced between the two main speakers due to individual adjustments.
Get some flat equipment, experiment a bit with the symmetrical positioning of the L/R speakers, and kill the objectionable reflections and dampen the bass resonance in the room (room treatment).
Disclaimer: My room correction device may not be as smart as that in the newer AVRs, but I suspect the same result occurs due to my observation of the limitations of FR adjustments.
edit: Tuner: if you have HD stations in your area consider getting a tuner that does HDRadio.
I'll be back later...
equitech -> sources > benchmark > krell > reQuest
Last edited by RayDunzl; 06-23-2014 at 01:05 PM.