Instruct: Classify an Amazon review into positive or negative sentiment.
Query: It works

I had no problems with this amplifier. It does what it says. The signal from the local digital broadcast stations jumped from ~60% to 85% on the signal meter of my receiver (Dish 811). As with all digital broadcasts, as rule of thumb, if you did not receive a station before, you are not going to receive it after. It does help the good old analog broadcast signals.