Kramer Electronics 104LN is a high performance line amplifier for composite and SDI video signals. It includes differential circuitry to help eliminate noise often found on the input cable in a long run. High Bandwidth - 423MHz (-3dB). Level (Gain) and EQ (Peaking) Controls. Compact Kramer TOOLS - 3 units can be rack mounted side-by-side in a 1U rack space with the optional RK-3T rack.