Hear Technologies Hear Back Monitor MixerThe Hear Technologies Hear Back Monitor Mixier is a flexible and affordable 16 x 12 x 2 x 2 monitor mixer that features two stereo outputs and twelve mono outputs. There are sixteen high quality Mic Line inputs with a passive split. It also features two HearBus outputs and two ADAT optical outputs. A perfect companion to the Hear Back personal monitor system. A talkback mic preamp permits talking to any mono output, master outputs and the intercom