ASR Emitter ii Exclusive

Aren't these things battery powered?

Only the line stage

Well, yes and no. The amp side runs on two separate power supplies one for each channel. They are heavy ,at 70 lbs each. The battery is only for the input stage. This units weight is around 45 lbs. When the unit is OFF or in STANDBY the battery is in the charge mode.
When the unit is in the ON (position one or two , the unit has two volume positions) the battery is then being used for listening. The battery is then diconnected from the line voltage charger via a relay. This way no ac in the unit to screw things up in the line stage.

so the power supplies aer external and thus we are dealing w the amp, battery supply for line stage, 2 external power supplies and thus 4 boxes?

Yes you are right . Total of four boxes. The Emitter has three cables each about 5/8 thick leading from the rear of the unit to each one of the boxes. These cables cannot be disconnected. Then each of the 3 boxes gets plugged in to your ac line, ASR provides two of the ac mains lead but you need provide your own for the battery.