Monoprice 114529 4K 4x2 HDMI Matrix&nbsp;with Remote Control This splitter features an internal amplifier, which boosts the HDMI signal and allows the use of longer than normal HDMI cable runs. This splitter features an internal amplifier, which boosts the HDMI signal and allows the use of longer than normal HDMI cable runs. This splitter features an internal amplifier, which boosts the HDMI signal and allows the use of longer than normal HDMI cable runs.