CD Player Power Supply Tweak

Has anyone tried to change the power supplies of the analog, digital and transport sections of a CD player for three separate Lab Grade Regulated Power supplies or high quality rechargable batteries like the ones used in battery powered amplifiers? It seems like a lot of tweaks are usually power supply cleaning and I think this could be achieved cheaply and easily with outboard power supplies. If so, let me know what they did and who is the supplier.

I also wonder wether anyone has tried a digital isolation transformer between the digital and analog sections of the output to isolate the two? This may reduce the so called digital reflections that "high quality" digital interconnects are designed to remove.

Finally, one can add some home made vibration isolation feet made out of sorbothane pads sandwiched in between metal washers with cones on top. Inside one can use some of the more traditional isolation reduction tweaks.

I am considering these mods on an already good cambridge D500SE player. It seems to have a good transport and a good DA converter. Let me know any other good economical candidates.

Hope to hear from you, Salsero