2-4 Gauge Out Distribution Block Proper voltage for your audio system is critical for optimal performance. EFX STATUS blocks monitor your voltage every step of the way so you can be sure your system is performing at it's best. STATUS blocks feature EZ insert dual gauge wire inputs/outputs for installation flexibility and screw down impact resistant covers. LED voltage display (2) 4 or 8 AWG outputs (3) 0 or 4 AWG input Uses compact AFC mini wafer fuses