Yep, I just found one for my speakers. I was looking to change the spiked w/disks footers. I figured out to thread, went to Lowes and Menards and got elevator bolts. At Menards, they had furniture floor protectors that were self-stick (to the bolts) with piece of (brown) plastic and an "O" ring on the bottom. I've used, and continue to use Herbie's isolation under many of my components. I used his Big Fat Dots under my previous speakers on my hardwood floors with success. This really cheap tweak works better than the dots under my Abbys. Clarity, depth and soundstage width abound.
Any new tweaks out there?
I know we've had threads dealing with this topic but newer members may have experiences not presented thus far. For instance, I'm sure many of us have noticed the the skimpy 12-14awg leads on the power supply of our amps. Has anyone tried replacing them with say, 8awg just to see what happens? Or changing out main caps? Or changing to pure silver signal wire? Or using the solder provision instead of the hold-down nuts on binding posts on the amp-side? Or going from E-I to toroid, etc.....? It would be great to hear about something new.