The BLACKBOX RECORDER with Unbalanced i/o is designed to plug across the insert points of a standard analogue mixing console via three 25-way female D-type connectors on the rear of the unit. Three 1/4-inch TRS terminated multicore looms are supplied for connecting the BBR to the console (TASCAM analogue format). Inside the unit, relays route the audio signal from input to output in all modes except during playback. This provides an additional level of safety so that in the event of a power failure on the BBR, the audio through the PA will not be affected.