Plane and simple. Better equipment will give you better sound quality.
BETTER, MORE GOOD. Has nothing to do with cost.. BUT GREAT equipment will cost you more.. Unless you have a rich uncle, that gives it to you..
First rule... The best equipment you can afford. Don't start at the bottom and work up. Start at the top and work down. This includes cabling.
Everything I use in my systems require NO cable upgrades, factory will work fine.. Speaker IC, XLR, RCA, good will work. Nothing too fancy..
First rule... As much room treatment as you can afford, or tolerate (if your gonna use a room)
First rule...Protect your expensive equipment, maintain 120 VAC and a FAST acting surge suppressor. (Clean the AC source...Maintain the source)
First rule...place you equipment and measure with a tape measure, then make MINOR adjustments.
TWEAKS, what's left? Most of it sounds good one day and not the next to me... WHY? Well, the ol mechanic comes out in me... "That was BS",
Cable risers work though.... Easy to clean under, and they do actually work, just takes a couple hours for me to hear the difference.. I knock a block over and don't see it, then stand up the riser. After a settling time.
I hear the difference..
ANY vibration control is good.
Over dampen a room.. A problem in a LOT of rooms...
Regards