Phase Loop Lock circuitry automatically locks in and keeps audio signal clear and strong.
Customer Reviews:
wireless speakers 
I had been looking for wireless speakers for about a year. I had ordered others and for one reason or another had send them back. These are wonderful….easy installation….work like a charm and the sound is great. Know I can hear my radio programs in rooms with no radio.
Barely audible 
I really had high hopes for these speakers. They are very good looking, but when they arrived, the included audio cable did not work. Not a big deal, I had an old one from an old set of wireless speakers. Once I got them working though, even at the highest volume you could not hear them from more than 3 feet away. Based on other reviews, I can only assume that my speakers were defective. I had to return them. On a positive note, the return process is really easy.
could be better 
these speakers work well as long as they are close to the source. They do not work well through walls. But it’s nice to have the wireless option.
Nice sound, especially for the price.
The sound quality, ease of installation and compact, sharp appearance make the speakers highly recommendable. Especially for the price, I would buy these again for another gift.
pretty decent for the price… but they don’t work THAT great
Here are the pros on my speakers:
These things look cool, they run on batteries or an A/C outlet, the bass is good, they’re LOUD, they’re very simple to set up.
And the cons:
The range is not as far as specified (there’s almost no signal travelling to the other side of the house 25 feet away), the remote has limited functions (you get volume control and a “Power” button that ONLY turns off and NOT on), there really should be equalizer knobs on each speaker (their bass is a little too prevalent when compared to my desktop speakers).
Hope this helps you potential buyers out!
And while you’re buying stuff on amazon, go ahead and get an audio splitter, you’ll definately need it (unless you like plugging in/out audio jacks from you computer)!
-D
