Spooky Coil can be used with both Spooky Central and a Spooky XM generator. The differences are itemized below.
The most powerful feature of Spooky Central is plasma. PEMF coil in Spooky Central helps induce electroporation at a fixed frequency.
When PEMF coil is used with Spooky2-xm generator, the power is reduced. But the coil can be used for entrainment. This usually requires variable frequencies.