I guess i would have to take back the statement about losing bass impact. When i installed the power supply i changed power cables to a cheap cryo'd cable. This change of cable caused the reduction in bass impact not the PSX 5.3 power supply. I have now returned to the original cable supplied with the 5.3 phono stage and my bass impact is back .
I hope to try a good high quality after market power cable in the future along with a PS Audio Premier power plant , hopefully i will see more improvements.
Todd