Kramer Electronics 105A is a high performance distribution amplifier for unbalanced stereo audio signals. It takes one stereo input and distributes the signal to five identical stereo outputs. Level (Gain) Controls. S/N Ratio - 80dB (unweighted). Compact Kramer TOOLS - 3 units can be rack mounted side-by-side in a 1U rack space with the optional RK-3T rack.