Given the equipment in your current system (some of which I either own now, or have owned in the past), I think you should seriously consider the Lehmann Audio Black Cube SE (this is the newest model with the much larger PWX power supply). This phono stage preamp is much better than it has any right to be at its $875 price point. If you want more info, go to HyendAudio's web site:
http://www.hyendaudio.com/Hy%20End%20Audio%20Imports%20PSW%20power%20supply%20upgrade.htm
There have been a number of reviews about this phono stage, and as a very satisfied owner I can attest that the positive comments are justified. I am using this phono stage with my Grado Reference cartridge, mounted in a Rega RB900 arm, and it's turned out to be a fine combination.
http://www.hyendaudio.com/Hy%20End%20Audio%20Imports%20PSW%20power%20supply%20upgrade.htm
There have been a number of reviews about this phono stage, and as a very satisfied owner I can attest that the positive comments are justified. I am using this phono stage with my Grado Reference cartridge, mounted in a Rega RB900 arm, and it's turned out to be a fine combination.