The device works in principle and is also suitable for HDTV. Without this amplifier, it was not possible to distribute the cable connection on two televisions, because the image quality was totally inadequate. The amplifier that easily could. The signal quality, however, changed by the use of the amplifier: amplifier without 95%, with 84% and light amplifier blocks formation on weaker channels. Consequently, this is not a two amplifier devices, but only a low-loss signal distribution. For misleading naming of the device only three points. In other amps I have no experience and therefore can only describe my subjective impression. It is quite possible that others are not better.