Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor By Comparison

i've got 2 sets of Sennheisers on our other TV. I didn't really read very carefully when I picked these. They require "line of sight" to function, so as soon as you move out of the 90 degree range (or bend over or whatever) no sound, that means quick trips from the study are out. I also had to add a preamp to get sufficient volume from a new Samsung LCD TV. The most annoying issue, though, is the charging cradle. The Sennheisers hang on their charger, so you can literally walk by and practically drop them on it. This unit requires 2 hands to place them "just right". I've given these over a year to adjust, but will likely replace them with another pair of Sennheisers.