The LT 7208 EN unit has 8 internal transformers (80 W / each) to convert the 8 Ohm loudspeaker outputs of the MU 7100 central unit into constant voltage lines (100 - 70 - 50 V) for loudspeakers having transformers. The possible combinations are 8 x 80W, 4 x 160 W and 2 x 320W (or any combination from these).