As it stands my system is fast, detailed and transparent. I would like to add a touch of air and harmonics to the system and perhaps enhance the focus a bit. I also want to enhance my system dynamics, hopefully by adding a high-current power amp. I have a Supratek Cortese Linestage on order. I am also going to replace the 4B-ST. Probably with a Sim Audio Moon W-5. I don't have problems with the sound of the Bryston but it runs out of steam sooner than I prefer and I think an amp that doubles down into 2 ohms will enhance the dynamics and control of my Thiels. I would appreciate comments on my proposed amp selection. The other alternative amp that I am considering is a Pass Labs X-250. After upgrading my preamp and amp I will add a single disc transport. Probably either a Vecteur D-2 or Rega Planet.
Here's a very inexpensive way to get exactly what you're looking for: run 6ga (or even better, 4ga) wire direct from your breaker panel to your system outlet. Put this circuit on it's own isolated ground, using a copper clad grouding rod located as near your system as possible. You'll be amazed at the reduction in grain, grunge, and noise, and impressed with the improvement in dynamics, ease, inner detail, air, focus and depth from this embarassingly cheap (probably under $200) upgrade.