I need a transmitter with 48v phantom power for a ME66/K6. Searched here and on B&H's site but don't seem to find anything. Anyone here with a wireless ME66?

If you have the me66 with the K6 that can be battery powered then you won't need phantom... and you won't really gain anything from it.

If you've got one of the phantom only K6 units then you may have to check around... Lectro plugs output 48v phantom, but I don't know about the other brands.

And the K6 will run on anywhere from 12 to 48 volts of phantom power.