Instruct: Classify Amazon reviews into positive or negative sentiment
Query: poor

Right out of the box the ac adapter did not work. I resorted to batteries, did the suggested adjustment to the unit (turned the pot 100% clockwise) found an empty freq on my radio and tuned the transmitter to same. Reciever is 20+/- from transmitter through an open door, lots of background hiss, right channel barely there at all. Tried different freq same result. moved antenna on both units with little change. For the money this is not a satisfactory product. I am going back to the wireless speakers that this unit was intended to replace, they work fine with far greater range and little if any hiss. This product is being returned.