Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I love this little subwoofer

I bought this woofer to accompany a Vizio sound bar driven from a 50" TV. (It seemed to be the exact model pictured in the sound bar's manual.) They worked fine together. Later I replaced the Vizio with a JVC, and again was able to set the gain for an ideal sound. My living room isn't too big, and this woofer easily adds just the punch to enjoy any kind of low sounds from movies, games, music. I love the "Auto Off" feature: it'll turn on when it senses some job to do (i.e. low frequencies) and turns off a few minutes after the sound source is turned off. You set it up once, and all you need to do is enjoy!