What commerical audio system tweaks provide sound quality improvement??

Physics definitely supports vibration control. Particularly for tube components and turntables. Don’t leave them out!

Also, room treatment is very well supported by theory.

Some tweaks, though.. Jeez. I can’t believe people purchase these things. They make some of the stuff the new agers buy look like quantum physics.

I dislike the idea of editing to prevent people from hurting themselves. Geoff did say not to clean hot and neutral at the same time. Which is fair warning. 

But if a bunch of us say it's foolproof safety to turn off the circuit, which it is, then anyone reading this can decide how to proceed.

@geoffkait I was thinking of the pebbles with the 'special crystal structure' that you tape or place on cables and components. It's a bag of rocks from a roadside attraction anywhere in the southwest...

@terry9 valid points!

Let's be honest, you don't hate to judge, hastily or not. 

@sunnyjim you may as well try the isolation platforms under the speakers and see how they sound to you! It should be easy enough to tell by looking, though, if the added height will be a problem in terms of tweeter height. But a couple of inches shouldn't matter I would think

Room treatment is huge! Hardwood floors are very reflective of sound. Area rugs are a great help, as you've discovered.
I have some windows to figure out. Too much resonance and ringing, but I hate curtains...

@jmccl12 those mirage speakers don't look too power hungry or difficult to drive, so I think you're probably fine with 14awg, but the only way to truly know is to try.