Hi Vivant, I own the Emitter II exclusive and Basis exclusive. I call them 'the German artillery'. Both transformers and both battery are in a separate rack at +/- 1,5 m. distance from the Emitter. Your assumption is that the battery part does not 'emit magnetic field'.
Well the batteries themselfs don't but there are transformers in the battery part to feed and regulate batteries. So obviously they also emit magnetic fields. You don't need some expensive rack for the purpose but well the solid one (4x > 30 kgr). With 4 'sections' of course.BTW I use the Emitter to 'feed' my Usher BE-20.
The Emitter can 'feed' any speakers provided that they are above 3 Ohm.
Regards,