Best Tweaks.....

Here's my two cents worth:
Quantum Symphony noise suppression/EMF stabilizer
Herbie's Grungebuster2 CD mat, Tenderfeet, Bigfooter & Halo rings for tubes
Mapleshade Silclear-on every contact you have, including tube pins
Hospital grade cryo'd outlets

1- Neuance platforms
2- Quality powercords. I'm only using Shunyata Diamondbacks and Copperheads, far from the most expensive, and still the improvement was stunning!
3- Balanced power supply for CDP and turntable. Keep them on separate filtered outlets though so the CDP doesn't pollute the TT.
4- separate dedicated homerun electrical lines with quality outlets (FIM, Furutech, many others).

Velodyne SMS-1, no question about it.

Thanx,
Russ

Go the the refuse can of a granite or marble company. Use the pieces of stone to mount your components on to. Good for vibration and other issues.

The best tweak by far for me is QuickSilver Gold from Xtreme Cables.........Here's some feedback. http://www.audioasylum.com/audio/tweaks/messages/125613.html