Whirlwind Pressmite Active Press Box (1) line in to (12) mic / (2) line outThis compact, active press feed distribution box distributes 12 high quality mic level signals and 2 line level signals with a high degree of isolation between outputs. It provides a 60dB gain adjustment for one mic or line input. The PressMite also features a built in headphone amp. Two alkaline 9V batteries provide power for typically more than 8 hours of continuous operation, monitored by a Battery OK LED. The batteries are easily replaced via side